A Synopsis of Fissidens

Fissidentaceae, Bryophyta — 481 accepted species

Fissidens Hedw., Sp. Musc. Frond.: 152. 1801. (Hedwig 1801; Pursell 2007a)
- =Octodiceras Brid., Muscol. Recent. Suppl. 1: 162. 1806. (Bridel 1806; Pursell 2007a)
- =Heterodon Raf., Med. Repos., hexade 2, 5: 350. 1808. (Rafinesque 1808; Pursell 2007a)
- =Skitophyllum Bach. Pyl., J. Bot. Agric. 4: 133. 1814, nom. illeg. (Pursell 2007a)
- =Fissidens sect. Pachyfissidens Müll. Hal., Syn. Musc. Frond. 1: 45. 1848. (Müller 1848b) ≡Pachyfissidens (Müll. Hal.) Limpr., Laubm. Deutschl. 1: 454. 1887. (Limpricht 1885–1903; Pursell 2007a)
- =Osmundula Rabenh., Krypt.-Fl. Sachsen 1: 609. 1863. (Rabenhorst 1863; Pursell 2007a)
- =Conomitrium sect. Polypodiopsis Müll. Hal., Linnaea 39: 360. 1875. (Müller 1875) ≡Polypodiopsis (Müll. Hal.) A. Jaeger, Rev. Bryol. 2: 109. 1875, nom. illeg. (Jaeger 1875; Pursell 2007a)
- =Schistophyllum Lindb., Utkast Eur. Bladmoss.: 16. 1878, nom. illeg. (Lindberg 1878; Pursell 2007a)
- =Moenkemeyera Müll. Hal., Flora 69: 506. 1886. (Müller 1886; Pursell 2007a)
- =Simplicidens Herzog, Beih. Bot. Centralbl., Abt. 2, 26(2): 58. 1909. (Herzog 1909; Pursell 2007a)
- =Fissidentella Cardot, Rev. Bryol. 36: 17. 1909. (Cardot 1909a; Pursell & Bruggeman-Nannenga 2004)
- =Nanobryum Dixon, J. Bot. 60: 101. 1922. (Dixon 1922; Pursell 2007a)
- =Sainsburia Dixon, Bryologist 44: 40. 1941. (Dixon 1941; Pursell 2007a)
Fissidens acacioides Schrad., J. Bot. (Schrader) 1801(1): 197. 1803. (Schrader 1802; Pursell 2007a)

≡Hypnum acacioides (Schrad.) L. ex Turner, Trans. Linn. Soc. London 7: 113. 1804. (Turner 1804b) ≡Dicranum acacioides (Schrad.) Turton, Gen. Syst. Nat. 6: 1717. 1806. ≡Skitophyllum acacioides (Schrad.) Bach. Pyl., J. Bot. Agric. 4: 154. 1815. ≡Schistophyllum acacioides (Schrad.) Lindb., Moss. Dillen. Hist. Musc.: 16. 1883.
- =Conomitrium stissotheca Müll. Hal., Syn. Musc. Frond. 2: 525. 1851. (Müller 1851; Pursell 2007a) ≡Fissidens stissotheca (Müll. Hal.) Mitt., J. Linn. Soc., Bot. 12: 585. 1869. (Mitten 1869; Pursell 2007a)
- =Fissidens substissotheca Broth., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 3(3): 10. 1895. (Brotherus 1895a; Pursell 2007a) ≡Conomitrium substissotheca (Broth.) Paris, Index Bryol. Suppl.: 103. 1900. (Pursell 2007a)
Fissidens acacioides Schrad. var. acacioides
Fissidens acacioides var. brevicostatus (Pursell, Brugg.-Nann. & B.H. Allen) Pursell, Bryobrothera 5: 175. 1999. (Pursell 1999a; Pursell 2007a)

Basionym: Fissidens stissotheca var. brevicostatus Pursell, Brugg.-Nann. & B.H. Allen, Bryologist 91: 213. 1988. (Pursell & Bruggeman-Nannenga 1988)
Fissidens acacioides var. immersus (Mitt.) Pursell, Bryobrothera 5: 175. 1999. (Pursell 1999a; Pursell 2007a)

Basionym: Fissidens immersus Mitt., J. Linn. Soc., Bot. 12: 584. 1869. (Mitten 1869; Pursell 2007a)

≡Octodiceras immersum (Mitt.) A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1874–75: 135. 1876. (Jaeger 1876; Pursell 2007a) ≡Conomitrium immersum (Mitt.) Kindb., Enum. Bryin. Exot.: 52. 1888. (Pursell 2007a) ≡Fissidens stissotheca var. immersus (Mitt.) Pursell, Brugg.-Nann. & B.H. Allen, Bryologist 91: 209. 1988. (Pursell & Bruggeman-Nannenga 1988)
- =Fissidens regnellii Broth., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 21, Afd. 3(3): 11. 1895. (Brotherus 1895a; Pursell 2007a) ≡Conomitrium regnellii (Broth.) Paris, Index Bryol. Suppl.: 103. 1900. (Pursell 2007a)
- =Fissidens acutangulus Broth., Ergebn. Bot. Exp. Südbras., Musci: 276. 1924. (Pursell 2007a)
- =Fissidens squamatus Broth., Ergebn. Bot. Exp. Südbras., Musci: 276. 1924. (Pursell 2007a)
Fissidens aciphyllus Dixon, Trans. Roy. Soc. South Africa 18(3): 250. 1929. (Dixon & Wager 1929; Magill 1981)
Fissidens acreanus Irmsch., Notizbl. Bot. Gart. Berlin-Dahlem 7: 534. 1921. (Irmscher 1921; Yano 2011)
Fissidens acrophilus Brugg.-Nann., Polish Bot. J. 58(1): 117. 2013. (Bruggeman-Nannenga 2013b)
Fissidens adianthoides Hedw., Sp. Musc. Frond.: 157. 1801. (Hedwig 1801; Pursell 2007a)

≡Hypnum adianthoides (Hedw.) With., Syst. Arr. Brit. Pl. (ed. 4) 3: 827. 1801. (Withering 1801) ≡Dicranum adianthoides (Hedw.) F. Weber & D. Mohr, Index Mus. Pl. Crypt.: 2 [recto]. 1803. (Weber & Mohr 1803) ≡Skitophyllum adianthoides (Hedw.) Bach. Pyl., J. Bot. Agric. 4: 162. 1815. ≡Dicranodon adianthoides (Hedw.) Béhéré, Séance Publique Soc. Libre Émul. Rouen 1826: 100. 1826. (Béhéré 1826) ≡Fissidens taxifolius var. adianthoides (Hedw.) Wahlenb. ex Huebener, Muscol. Germ.: 709. 1833. (Huebener 1833) ≡Schistophyllum adianthoides (Hedw.) Lindb., Musci Scand.: 13. 1879. (Lindberg 1879)
- =Fissidens adianthoides var. crispulus Schwägr. ex Brid., Bryol. Univ. 2: 704. 1827. (Bridel 1827)
- =Dicranum adianthoides var. undulatum Lisa, Elenc. Musch.: 28. 1837. ≡Fissidens adianthoides var. undulatum (Lisa) De Not., Syllab. Musc.: 89. 1838. (De Notaris 1838)
- =Fissidens adianthoides var. immarginatus Lindb. ex Lesq. & James, Man. Mosses N. America: 88. 1884. (Lesquereux & James 1884; Pursell 2007b) ≡Fissidens adianthoides f. immarginatus (Lindb. ex Lesq. & James) Habeeb, Rhodora 52: 73. 1950. (Habeeb 1950)
- =Fissidens major Mitt., J. Linn. Soc., Bot. 21: 559. 1885. (Mitten 1886b; Streimann & Klazenga 2002)
- =Schistophyllum adianthoides f. submersum Arnell, Bot. Not. 1886: 92. 1886. ≡Fissidens adianthoides f. submersus (Arnell) H.A. Möller, Bot. Not. 1907: 142. 1907. (Möller 1907)
- =Fissidens adianthoides var. irroratus Debat, Bull. Soc. Bot. Lyon Compt. Rend. Séances 10(4): 56. 1892. ≡Fissidens adianthoides f. irroratus (Debat) Podp., Consp. Musc. Eur.: 85. 1954. (Podpěra 1954)
- =Fissidens adianthoides var. brachyphyllus Kindb., Cat. Canad. Pl., Musci: 37. 1892. (Macoun & Kindberg 1892; Crum & Anderson 1981)
- =Fissidens adianthoides subsp. subtaxifolius Kindb., Bull. Soc. Bot. Ital. 1896: 15. 1896. ≡Fissidens subtaxifolius (Kindb.) Paris, Index Bryol. Suppl.: 165. 1900. (Wijk et al. 1962) ≡Fissidens taxifolius var. subtaxifolius (Kindb.) J.J. Amann, Fl. Mouss. Suisse 1: 75. 1918. (Amann & Meylan 1918) ≡Fissidens taxifolius f. subtaxifolius (Kindb.) Laz. ex Bachurina & Meln., Fl. Mokh. Ukraïns'k. RSR 1: 76. 1976. (Bachurina & Melnichuk 1987)
- =Fissidens adianthoides f. atrovirens Besch., J. Bot. (Morot) 12: 290. 1898. (Bescherelle 1898b)
- =Fissidens adianthoides f. cyathicarpus Besch., J. Bot. (Morot) 12: 290. 1898. (Bescherelle 1898b)
- =Fissidens adianthoides f. polyphylloides Besch., J. Bot. (Morot) 12: 290. 1898. (Bescherelle 1898b)
- =Fissidens adianthoides f. praecox Besch., J. Bot. (Morot) 12: 290. 1898. (Bescherelle 1898b)
- =Fissidens adianthoides f. subdecipiens Besch., J. Bot. (Morot) 12: 290. 1898. (Bescherelle 1898b)
- =Fissidens gottscheaeoides Besch., J. Bot. (Morot) 12: 291. 1898. (Noguchi & Iwatsuki 1987)
- =Fissidens adianthoides var. distantifolius Röll, Jahrb. Königl. Akad. Gemeinnütz. Wiss. Erfurt 41: 136. 1915. ≡Fissidens adianthoides f. distantifolius (Röll) Podp., Consp. Musc. Eur.: 85. 1954. (Podpěra 1954)
- =Fissidens adianthoides var. lacustris J.J. Amann, Fl. Mouss. Suisse 1: 75. 1918. (Amann & Meylan 1918; Podpěra 1954)
- =Fissidens adianthoides f. elimbatus Latzel, Hedwigia 66: 138. 1926. (Podpěra 1954)
Fissidens afropapillosus P. de la Varde, Ark. Bot., n.s. 3: 130. 1955. (Potier de la Varde 1955a; O'Shea 2006)
Fissidens aggestus (Besch.) Paris, Actes Soc. Linn. Bordeaux 49(3): 135. 1895. (Paris 1895; He & Nguyen 2012)

Basionym: Conomitrium aggestum Besch., Bull. Soc. Bot. France 41: 79. 1894. (Bescherelle 1894)
Fissidens ah-pengae Brugg.-Nann., J. Bryol. 31: 106. 2009. (Bruggeman-Nannenga 2009a)
Fissidens albolimbatus Dixon, J. Linn. Soc., Bot. 50: 77. 1935. (Dixon 1935a; Suzuki & Iwatsuki 2013b)
Fissidens allionii Broth., Rev. Bryol. 47: 5. 1920. (Brotherus 1920a; Pursell 2007a)
- =Conomitrium brunneolum Müll. Hal., Gen. Musc. Frond.: 76. 1900. (Müller 1901; Pursell 2007a) ≡Fissidens brunneolus (Müll. Hal.) Broth., Nat. Pflanzenfam. I(3): 358. 1901. (Pursell 2007a)
Fissidens allorgei P. de la Varde, Bull. Mus. Natl. Hist. Nat., Sér. 2, 15: 239. 1943. (Potier de la Varde 1943; O'Shea 2006)
Fissidens alomoides Müll. Hal. ex Dusén, Kongl. Svenska Vetensk. Acad. Handl., n.s. 28(2): 10. 1895. (Dusén 1895; O'Shea 2006)
Fissidens altisetus Dixon, Proc. Linn. Soc. New South Wales 55: 271. 1930. (Dixon & Greenwood 1930; Seppelt & Stone 2016)
Fissidens amazonicus Pursell, Beih. Nova Hedwigia 90: 345. 1988. (Pursell 1988; Pursell 2007a)
Fissidens amoenus Müll. Hal., Bot. Zeitung (Berlin) 5: 38. 1847. (Müller 1847a; Pursell 2007a)

≡Conomitrium amoenum (Müll. Hal.) Müll. Hal., Syn. Musc. Frond. 2: 527. 1851. (Müller 1851)
- =Fissidens hallii Austin, Bot. Gaz. 2: 97. 1877. (Pursell 2007a) ≡Fissidens exilis subsp. hallii (Austin) Kindb., Eur. N. Amer. Bryin. 2: 168. 1897[1898]. (Kindberg 1897)
- =Fissidens austinii Broth., Nat. Pflanzenfam. I(3): 357. 1901, nom. illeg. (Pursell 2007a)
- =Fissidens platyphyllus Broth., Ergebn. Bot. Exp. Südbras., Musci: 275. 1924. (Pursell 2007a)
- =Fissidens orcuttii Grout, Moss Fl. N. Amer. 1: 20. 1936. (Grout 1936-1939; Pursell 2007a)
- =Fissidens tamaulipasensis Pursell, Cryptog. Bryol. Lichénol. 7: 41. 1986. (Pursell 1986; Pursell 2007a)
Fissidens amplifolius Dixon & P. de la Varde, Ann. Cryptog. Exot. 3(4): 170. 1930. (Potier de la Varde 1930; Wijk et al. 1962)
Fissidens andicola (Herzog) Brugg.-Nann., Syst. Stud. Fissidens: 158. 1988. (Bruggeman-Nannenga 1988; Pursell 2007a)

Basionym: Simplicidens andicola Herzog, Beih. Bot. Centralbl., Abt. 2, 26(2): 58. 1909. (Herzog 1909)
- =Simplicidens plumula Herzog, Biblioth. Bot. 88: 7. 1920. (Herzog 1921; Pursell 2007a)
Fissidens androgynus Bruch, Flora 29: 134. 1846. (Bruch 1846; Bruggeman-Nannenga 2013c)
- =Fissidens remotifolius Müll. Hal., Syn. Musc. Frond. 1: 60. 1848. (Müller 1848b; O'Shea 2006)
- =Fissidens simensis Schimp. ex Müll. Hal., Bot. Zeitung (Berlin) 22: 341. 1864. (Müller 1864; Bruggeman-Nannenga 2013c)
- =Fissidens longipes Welw. & Duby, Mém. Soc. Phys. Genève 21: 224. 1872. (Duby 1872; Bruggeman-Nannenga 2013c)
- =Fissidens gueinzii Müll. Hal., Linnaea 37: 168. 1873[1872]. (Bruggeman-Nannenga 2013c)
- =Fissidens subremotifolius Müll. Hal., Hedwigia 38: 54. 1899. (Müller 1899; Bruggeman-Nannenga 2013c)
- =Fissidens malacobryoides Müll. Hal., Hedwigia 38: 55. 1899. (Müller 1899; Bruggeman-Nannenga 2013c)
- =Fissidens obsoletidens var. schistophila Broth., Wiss. Ergebn. Deut. Zentr.-Afr. Exped., Bot.: 143. 1910. (Brotherus 1910b; Bruggeman-Nannenga 2013c)
- =Fissidens platybryoides var. subimmarginatus Dixon, Bull. Soc. Roy. Bot. Belgique 60: 13. 1927. (Bruggeman-Nannenga 2013c)
- =Fissidens crateris Dixon, J. Bot. 76: 219. 1938. (Dixon 1938a; Bruggeman-Nannenga 2013c)
- =Fissidens crateris var. sererekae Dixon, J. Bot. 76: 220. 1938. (Dixon 1938a; Bruggeman-Nannenga 2013c)
Fissidens angustelimbatus Mitt., J. Linn. Soc., Bot. 12: 601. 1869. (Mitten 1869; Pursell 2007a)

≡Conomitrium angustelimbatum (Mitt.) A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1874–75: 42. 1876. (Jaeger 1876; Pursell 2007a)
- =Fissidens falcatus Lindb., Öfvers. Kongl. Vetensk.-Akad. Förh. 33(4): 49. 1876, nom. illeg. (Ångström 1876; Pursell 2007a)
- =Conomitrium smaragdinum Lorentz & Müll. Hal., Linnaea 42: 248. 1879. (Müller 1879b; Pursell 2007a) ≡Fissidens smaragdinus (Lorentz & Müll. Hal.) Broth., Nat. Pflanzenfam. I(3): 355. 1901. (Pursell 2007a)
- =Fissidens fossicola Müll. Hal., Linnaea 43: 354. 1882. (Müller 1882; Pursell 2007a)
- =Fissidens protracticaulis Broth., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 21, Afd. 3(3): 18. 1895. (Brotherus 1895a; Pursell 2007a)
- =Fissidens goebelii Müll. Hal., Flora 83: 327. 1897. (Müller 1897d; Pursell 2007a)
- =Fissidens leptocaulis Müll. Hal., Hedwigia 36: 87. 1897. (Müller 1897e; Pursell 2007a)
- =Fissidens pennula Broth., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 26, Afd. 3(7): 13. 1900. (Brotherus 1900; Florschütz-de Waard 2011)
- =Fissidens malmei Broth., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 3(7): 13. 1900. (Brotherus 1900; Pursell 2007a)
- =Fissidens mattogrossensis Broth., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 3(7): 14. 1900. (Brotherus 1900; Pursell 2007a)
- =Fissidens angustelimbatus var. brevisetus Broth., Ergebn. Bot. Exp. Südbras., Musci: 271. 1924. (Pursell 1994c)
- =Fissidens capillisetoides Brugg.-Nann., Proc. Kon. Ned. Akad. Wetensch., C 71: 176. 1973. (Bruggeman-Nannenga 1973; Pursell 2007a)
- =Fissidens variabilis Brugg.-Nann., Proc. Kon. Ned. Akad. Wetensch., C 71: 183. 1973. (Bruggeman-Nannenga 1973; Pursell 2007a)
Fissidens angustelimbatus Mitt. var. angustelimbatus
Fissidens angustelimbatus var. colombiensis Pursell, Hikobia 11: 357. 1994. (Pursell 1994a; Pursell 2007a)
Fissidens angustiusculus Dixon & P. de la Varde, Arch. Bot. Bull. Mens. 1(8–9): 163. 1927. (Dixon & Potier de la Varde 1927; O'Shea 2002)
Fissidens angustus Thwaites & Mitt., J. Linn. Soc., Bot. 13: 324. 1873. (Mitten 1873b; O'Shea 2002)
Fissidens anisophyllus Dixon, J. Linn. Soc., Bot. 40: 442. 1912. (Dixon 1912; Beever 1996)
Fissidens annamensis Paris & Broth., Rev. Bryol. 36: 89. 1909. (Paris 1909; Tan & Iwatsuki 1993)
Fissidens anomalus Mont., Ann. Sci. Nat., Bot., sér. 2, 17: 252. 1842. (Montagne 1842; Eddy 1988)
- =Fissidens neckeroides Griff., Calcutta J. Nat. Hist. 2: 504. 1842. (Griffith 1842; Wijk et al. 1962)
- =Fissidens cryptotheca Dozy & Molk., Pl. Jungh.: 314. 1854. (Wijk et al. 1962)
- =Fissidens schiffneri Baumgartner & Dixon, Ann. Naturhist. Mus. Wien 59: 67. 1953. (Froehlich 1953; Eddy 1988)
†Fissidens antiquus Saporta, Ann. Sci. Nat., Bot., sér. 7, 7: 11. 1888. (Saporta 1888; Boureau 1967)
Fissidens antrophyi Müll. Hal., Linnaea 36: 31. 1869. (Müller 1870; O'Shea 2002)
Fissidens aoraiensis H. Whittier & H.A. Mill., Bryologist 70: 87. 1967. (Whittier & Miller 1967; Miller et al. 1978)
Fissidens aphelotaxifolius Pursell, Bull. Torrey Bot. Club 103: 35. 1976. (Pursell 1976; Pursell 2007b)
Fissidens appalachensis R.H. Zander, Bryologist 72: 406. 1969. (Zander 1969; Pursell & Allen 1996)
Fissidens arboricola Brugg.-Nann., Cryptog., Bryol. 43(3): 38. 2022. (Bruggeman-Nannenga 2022b)
Fissidens arcticus Bryhn, Rep. Second Norweg. Arctic Exped. Fram 1898–1902, 2(11): 57. 1906. (Bryhn 1906; Pursell 2007b)
Fissidens argyroloma P. de la Varde, Rev. Bryol. Lichénol. 6: 132. 1934. (Potier de la Varde 1933; O'Shea 2006)
Fissidens aristifer Brugg.-Nann., J. Bryol. 31: 107. 2009. (Bruggeman-Nannenga 2009a; Bruggeman-Nannenga & Arts 2010)
Fissidens arnigadhensis Broth. ex S.S. Kumar, Misc. Bryol. Lichenol. 8: 118. 1979. (Kumar 1979; Chopra & Kumar 1981)
Fissidens arnoldi R. Ruthe, Hedwigia 9: 178. 1870. (Ruthe 1870; Hodgetts et al. 2020)
- =Fissidens antineae P. de la Varde, Bull. Soc. Hist. Nat. Afrique N. 22: 158. 1931. (Heyn & Herrnstadt 2004)
Fissidens artsii Brugg.-Nann., Trop. Bryol. 26: 14. 2005. (Bruggeman-Nannenga 2005; Bruggeman-Nannenga 2013c)
Fissidens arunii J.P. Srivast. & Nork., Proc. Bot. Soc. Kanpur (India) 1: 55. 1988. (Srivastava & Norkett 1988; Bruggeman-Nannenga 2019a)
Fissidens asplenioides Hedw., Sp. Musc. Frond.: 156. 1801. (Hedwig 1801; Pursell 2007a)

≡Hypnum asplenioides (Hedw.) Dicks., Fasc. Pl. Crypt. Brit. 4: [30]. 1801. ≡Dicranum asplenioides (Hedw.) F. Weber & D. Mohr, Index Mus. Pl. Crypt.: 2 [recto]. 1803. (Weber & Mohr 1803) ≡Skitophyllum asplenioides (Hedw.) Bach. Pyl., J. Bot. Agric. 4: 156. 1815.
- =Fissidens asplenioides var. maximus Bél., Voy. Indes Or., Bot. 2: 106. 1834. (Bélanger 1834)
- =Fissidens turbinatus Taylor, London J. Bot. 7: 190. 1848. (Taylor 1848; Pursell 2007a)
- =Fissidens genunervis Müll. Hal., Syn. Musc. Frond. 1: 70. 1848. (Müller 1848b; Pursell 2007a)
- =Fissidens ligulatus Hook. f. & Wilson, Fl. Nov.-Zel. 2: 63. 1854. (Pursell 2007a) ≡Conomitrium ligulatum (Hook. f. & Wilson) Müll. Hal., Gen. Musc. Frond.: 75. 1900. (Müller 1901; Pursell 2007a)
- =Fissidens knightii Reichardt, Verh. K.K. Zool.-Bot. Ges. Wien 18: 194. 1868. (Reichardt 1868; Beever 1999)
- =Fissidens obtusatus Hampe, Vidensk. Meddel. Dansk Naturhist. Foren. Kjøbenhavn ser. 3, 4: 59. 1872. (Pursell 2007a)
- =Fissidens martinicae Besch., Ann. Sci. Nat., Bot., sér. 6, 3: 192. 1876. (Bescherelle 1876; Pursell 2007a)
- =Fissidens nigricans Schimp. ex Besch., Ann. Sci. Nat., Bot., sér. 6, 3: 192. 1876. (Bescherelle 1876; Pursell 2007a)
- =Fissidens guadalupensis Schimp. ex Besch., Ann. Sci. Nat., Bot., sér. 6, 3: 193. 1876. (Bescherelle 1876; Pursell 2007a) ≡Fissidens similiretis var. guadalupensis (Schimp. ex Besch.) Grout, N. Amer. Fl. 15: 193. 1943. (Grout 1943)
- =Fissidens glossophyllus Müll. Hal., Linnaea 42: 236. 1879. (Müller 1879b; Pursell 2007a)
- =Fissidens glossophyllus var. brevifolius Müll. Hal., Linnaea 42: 237. 1879. (Müller 1879b; Matteri 2003)
- =Fissidens boivinianus Besch., Ann. Sci. Nat., Bot., sér. 6, 9: 331. 1880. (Bescherelle 1879; Pursell 2007a)
- =Fissidens boivinianus var. longifolius Besch., Ann. Sci. Nat., Bot., sér. 6, 9: 331. 1880. (Bescherelle 1879; Bruggeman-Nannenga & Arts 2010)
- =Fissidens caloglottis Müll. Hal., Flora 71: 407. 1888. (Müller 1888; Pursell 2007a)
- =Fissidens barbae-montis Müll. Hal., Bull. Soc. Roy. Bot. Belgique 31(2): 152. 1893. (Pursell 2007a)
- =Fissidens nadeaudii Besch., Ann. Sci. Nat., Bot., sér. 7, 20: 22. 1894. (Pursell 2007a)
- =Fissidens costaricensis Besch., Bull. Herb. Boissier 2: 390. 1894. (Pursell 2007a)
- =Fissidens nematopteris Müll. Hal. ex Dusén, Kongl. Svenska Vetensk. Acad. Handl., n.s. 28(2): 5. 1895. (Dusén 1895; Pursell 2007a)
- =Fissidens gracilifrondeus Müll. Hal., Bull. Herb. Boissier 5: 172. 1897. (Müller 1897a; Pursell 2007a)
- =Fissidens lingulatus Müll. Hal., Bull. Herb. Boissier 5: 172. 1897. (Müller 1897a; Pursell 2007a)
- =Fissidens araucarieti Müll. Hal., Bull. Herb. Boissier 6: 23. 1898. (Müller 1898a; Pursell 2007a)
- =Fissidens amblyophyllus Müll. Hal., Hedwigia 38: 57. 1899. (Müller 1899; Pursell 2007a)
- =Fissidens asplenioides var. angustatus Cardot, Rev. Bryol. 28: 113. 1901. (Cardot 1901; Bruggeman-Nannenga et al. 1994)
- =Fissidens atlanticus Renauld & Cardot, Bull. Soc. Roy. Bot. Belgique 41(1): 48. 1905. (Pursell 2007a)
- =Fissidens amboroicus Herzog, Beih. Bot. Centralbl., Abt. 2, 27(2): 349. 1910. (Herzog 1910a; Pursell 2007a)
- =Fissidens maschalanthus var. minor Dusén, Revista Chilena Hist. Nat. 22: 83. 1918. (Pursell 2007a)
- =Fissidens pycnotylus Broth., Nat. Hist. Juan Fernandez 2: 418. 1924. (Brotherus 1924c; Pursell 2007a)
- =Fissidens ruwenzorensis Thér. & Naveau, Bull. Soc. Roy. Bot. Belgique 60: 14. 1927. (Pursell 2007a)
- =Fissidens asplenioides var. latifolius Thér., Rev. Bryol. Lichénol. 7: 56. 1934. (Pursell 2007a)
- =Fissidens laxobasis Bizot & Thér., Mem. Soc. Cub. Hist. Nat. "Felipe Poey" 13: 209. 1939. (Thériot 1939; Pursell 2007a)
Fissidens asplenioides var. aegrotus (Bizot) Brugg.-Nann., Pursell & Z. Iwats., J. Hattori Bot. Lab. 77: 261. 1994. (Bruggeman-Nannenga et al. 1994; O'Shea 2006)

Basionym: Fissidens aegrotus Bizot, Rev. Bryol. Lichénol. 42: 846. 1976. (Bizot 1976; Bruggeman-Nannenga et al. 1994)
Fissidens asplenioides Hedw. var. asplenioides
Fissidens asselii Bizot, Rev. Bryol. Lichénol. 40: 130. 1974. (Bizot 1974; O'Shea 2006)
Fissidens autoicus Thér. & Dixon, J. Linn. Soc., Bot. 43: 297. 1916. (Dixon 1916; Stone 1994a)
- =Fissidens cairnensis Broth. & Watts, Proc. Linn. Soc. New South Wales 43: 549. 1918. (Brotherus & Watts 1918; Stone 1994a)
Fissidens axilliflorus Thwaites & Mitt., J. Linn. Soc., Bot. 13: 325. 1873. (Mitten 1873b; Suzuki & Iwatsuki 2013b)
Fissidens azoricus (P. de la Varde) Bizot, Rev. Bryol. Lichénol. 40: 110. 1974. (Bizot 1974; Hodgetts et al. 2020)

Basionym: Fissidens ovatus var. azoricus P. de la Varde, Rev. Bryol. Lichénol. 15: 44. 1946. (Potier de la Varde 1945b)
Fissidens badyinbarus I.G. Stone, J. Bryol. 17: 624. 1993. (Stone & Catcheside 1993)
Fissidens bassilae Alia, Brugg.-Nann. & Reeb, Bryoph. Diversity & Evol. 47(1): 22. 2024. (Alia et al. 2024)
Fissidens beccarii (Hampe) Broth., Nat. Pflanzenfam. I(3): 362. 1901. (Brotherus 1901b; Pursell & Bruggeman-Nannenga 1988)

Basionym: Conomitrium beccarii Hampe, Nuovo Giorn. Bot. Ital. 4: 290. 1872. (Hampe 1872)

≡Octodiceras beccarii (Hampe) A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1874–75: 136. 1876. (Jaeger 1876)
Fissidens beckettii Mitt., J. Linn. Soc., Bot. 13: 325. 1873. (Mitten 1873b; Bruggeman-Nannenga 2013c)
- =Fissidens calodictyon Broth., Öfvers. Finska Vetensk.-Soc. Förh. 33: 94. 1891. (Stone 1994a)
- =Fissidens mouensis Thér., Bull. Acad. Int. Géogr. Bot. 20: 97. 1910. (Thériot 1910a; Pursell 2007a)
- =Fissidens aristatus Sim, Trans. Roy. Soc. South Africa 15: 200. 1926, nom. illeg. (Sim 1926; Bruggeman-Nannenga 1997) ≡Fissidens simii Schelpe, Mem. Bot. Surv. South Africa 43: 5. 1979. (Magill & Schelpe 1979; Bruggeman-Nannenga 1997)
- =Fissidens curvatoxiphioides Dixon & P. de la Varde, Arch. Bot. Bull. Mens. 1(8–9): 163. 1927. (Dixon & Potier de la Varde 1927; Eddy 1988)
- =Fissidens subpycnophyllus P. de la Varde, Arch. Bot. Bull. Mens. 4(2): 17. 1930. (Bruggeman-Nannenga 1997)
- =Fissidens smilioides P. de la Varde, Rev. Bryol. Lichénol. 5: 84. 1933. (Bruggeman-Nannenga 1997)
- =Fissidens acanthophyllus P. de la Varde, Rev. Bryol. Lichénol. 9: 197. 1937. (Bruggeman-Nannenga 1997)
- =Fissidens burmensis E.B. Bartram, Rev. Bryol. Lichénol. 23: 242. 1954. (Bartram 1954b; Eddy 1988)
- =Fissidens quisqueyanus Pursell, Bryologist 88: 74. 1985. (Pursell 1985a; Pursell 2007a)
- =Fissidens jaliscensis Pursell, Cryptog. Bryol. Lichénol. 7: 37. 1986. (Pursell 1986; Pursell 2007a)
Fissidens benitotanii Z. Iwats., K.T. Yong & Tad. Suzuki, Gard. Bull. Singapore 61(1): 49. 2009. (Iwatsuki et al. 2009)
Fissidens berteroi (Mont.) Müll. Hal., Syn. Musc. Frond. 1: 45. 1848. (Müller 1848b; Pursell 2007a)

Basionym: Conomitrium berteroi Mont., Ann. Sci. Nat., Bot., sér. 2, 8: 250. 1837. (Montagne 1837; Pursell 2007a)

≡Octodiceras berteroi (Mont.) A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1874–75: 135. 1876. (Jaeger 1876)
- =Conomitrium muelleri Hampe, Linnaea 28: 214. 1856. (Pursell 2007a) ≡Octodiceras muelleri (Hampe) A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1874–75: 135. 1876. (Jaeger 1876; Pursell 2007a) ≡Fissidens muelleri (Hampe) Mitt., Trans. & Proc. Roy. Soc. Victoria 19: 91. 1882. (Mitten 1883; Pursell 2007a)
- =Fissidens parvus Mitt., J. Linn. Soc., Bot. 12: 584. 1869, nom. illeg. (Mitten 1869)
- =Conomitrium molle Müll. Hal., Linnaea 42: 247. 1879. (Müller 1879b; Pursell 2007a) ≡Fissidens mollis (Müll. Hal.) Broth., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 3(7): 11. 1900, nom. illeg. (Brotherus 1900; Pursell 2007a) ≡Fissidens permollis Thér., Rev. Bryol., n.s. 4: 171. 1932. (Thériot 1931; Pursell 2007a)
- =Conomitrium nigritellum Müll. Hal., Hedwigia 36(2): 89. 1897. (Müller 1897e; Pursell 2007a) ≡Fissidens nigritellus (Müll. Hal.) Broth., Nat. Pflanzenfam. I(3): 362. 1901. (Pursell 2007a)
- =Conomitrium lorentziae Müll. Hal., Hedwigia 36: 89. 1897. (Müller 1897e; Pursell 2007a) ≡Fissidens lorentziae (Müll. Hal.) Broth., Nat. Pflanzenfam. I(3): 362. 1901. (Pursell 2007a)
- =Conomitrium muelleri f. majus Geh., Rev. Bryol. 24: 68. 1897. (Geheeb 1897)
- =Fissidens brevicaulis Broth., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 3(7): 11. 1900. (Brotherus 1900; Pursell 2007a) ≡Conomitrium brevicaule (Broth.) Paris, Index Bryol. (ed. 2) 1: 351. 1904. (Paris 1904-1906; Pursell 2007a)
Fissidens bessouensis Corb., Bull. Mus. Natl. Hist. Nat. 18: 109. 1912. (Corbière 1912; Bruggeman-Nannenga 2013b)
- =Fissidens jordanii J. Taylor & P. de la Varde, Kew Bull. 9: 505. 1954. (Bruggeman-Nannenga 2013b)
Fissidens biformis Mitt., J. Proc. Linn. Soc., Bot., Suppl. 1(2): 141. 1859. (Mitten 1859; Bruggeman-Nannenga 2016)
- =Fissidens angustifolius Sull., Musci Cub. Wright.: 275. 1861. (Sullivant 1861; Bruggeman-Nannenga 2016)
- =Fissidens papulans Besch., Rev. Bryol. 18: 50, 51. 1891. (Pursell 2007a)
- =Fissidens leptophyllus Broth., Bot. Jahrb. Syst. 20: 182. 1894, nom. illeg. (Brotherus 1894; Bruggeman-Nannenga 1997) ≡Fissidens brotheri Paris, Index Bryol.: 462. 1896. (O'Shea 2006)
- =Fissidens bernoullii Schimp. ex Müll. Hal., Bull. Herb. Boissier 5: 173. 1897. (Müller 1897a; Pursell 2007a)
- =Fissidens coorgensis Broth., Rec. Bot. Surv. India 1: 316. 1899. (Brotherus 1899b; Eddy 1988)
- =Fissidens ensifolius Broth., Hedwigia 45: 264. 1906. (Brotherus 1906a; Pursell 2007a)
- =Fissidens monostictus Broth. & P. de la Varde, Bull. Soc. Bot. France 72: 791. 1925. (Bruggeman-Nannenga 1997)
- =Fissidens diversiretis Dixon, Proc. Linn. Soc. New South Wales 55: 270. 1930, nom. illeg. (Dixon & Greenwood 1930; Pursell et al. 1992) ≡Fissidens dixonianus E.B. Bartram, Occas. Pap. Bernice Pauahi Bishop Mus. 19(11): 220. 1948. (Bartram 1948; Pursell et al. 1992)
- =Fissidens svihlae E.B. Bartram, Bryologist 50: 202. 1947. (Bartram 1947b; Pursell 2007a)
- =Fissidens duryae Bizot, Bryologist 75: 341. 1973. (Pursell 2007a)
Fissidens bifrons Schimp. ex Müll. Hal., Bot. Zeitung (Berlin) 17: 198. 1859. (Müller 1859; Stone 1994a)
- =Fissidens bryoidioides Broth., Proc. Linn. Soc. New South Wales 41: 576. 1916. (Brotherus 1916; Stone 1994a)
Fissidens bilaspurensis Gangulee, Bull. Bot. Soc. Bengal 11: 66. 1957[1959]. (Gangulee 1957; Gangulee 1971)
Fissidens bilewskyi P. de la Varde, Rev. Bryol. Lichénol. 25: 122. 1956. (Potier de la Varde 1956a; Heyn & Herrnstadt 2004)
Fissidens bistratosus Brugg.-Nann., Bryobrothera 5: 69. 1999. (Bruggeman-Nannenga 1999; O'Shea 2006)
Fissidens blechnoides J.E. Beever, J. Bryol. 19: 258. 1996. (Beever 1996; Beever 2014)
Fissidens bogoriensis M. Fleisch., Musci Buitenzorg 1: 22. 1904. (Fleischer 1904; Eddy 1988)
- =Fissidens subacutissimus Thér., Bull. Acad. Int. Géogr. Bot. 18: 252. 1908. (Thériot 1908; Thouvenot & Bardat 2010)
- =Fissidens diversiretis E.B. Bartram, Philipp. J. Sci. 68: 21. 1939, nom. illeg. (Bartram 1939b; Seppelt & Stone 2016) ≡Fissidens lagunensis E.B. Bartram, Farlowia 1: 504. 1944. (Bartram 1944; Seppelt & Stone 2016)
- =Fissidens closteroides Z. Iwats., J. Jap. Bot. 39: 183. 1964. (Iwatsuki 1964; Eddy 1988)
- =Fissidens iriomotejimensis Shin, Sci. Rep. Kagoshima Univ. 13: 38. 1964. (Shin 1964; Noguchi & Iwatsuki 1987)
- =Fissidens horikawanus Shin, Sci. Rep. Kagoshima Univ. 13: 76. 1964. (Shin 1964; Noguchi & Iwatsuki 1987)
Fissidens bogosicus Müll. Hal., Nuovo Giorn. Bot. Ital. 4: 10. 1872. (Venturi 1872; Bruggeman-Nannenga 2013c)
- =Fissidens pseudolimbatus Venturi, Nuovo Giorn. Bot. Ital. 4: 10. 1872. (Venturi 1872; Bruggeman-Nannenga 1997)
- =Fissidens longulus Müll. Hal., Hedwigia 38: 56. 1899. (Müller 1899; Bruggeman-Nannenga & Arts 2010)
- =Fissidens calochlorus Dixon, S. African J. Sci. 18: 306. 1920. (Bruggeman-Nannenga 1997)
- =Fissidens microandrogynus Dixon, S. African J. Sci. 18: 306. 1922. (Sim & Dixon 1922; Bruggeman-Nannenga & Arts 2010)
- =Fissidens parvilimbatus Sim, Trans. Roy. Soc. South Africa 15: 190. 1926. (Sim 1926; Bruggeman-Nannenga & Arts 2010)
- =Fissidens hyalobasis Dixon, Trans. Roy. Soc. South Africa 15: 195. 1926. (Sim 1926; Bruggeman-Nannenga 1997)
- =Fissidens intralimbatulus Broth. & P. de la Varde, Rev. Bryol., n.s. 1: 87. 1928. (Bruggeman-Nannenga 1997)
- =Fissidens pectinidens Dixon, Trans. Roy. Soc. South Africa 18(3): 251. 1929. (Dixon & Wager 1929; Bruggeman-Nannenga & Arts 2010)
- =Fissidens micro-ocellatus Dixon, Kongel. Norske Vidensk. Selsk. Forh. 9: 36. 1936. (Dixon 1936; Bruggeman-Nannenga 1997)
Fissidens boninensis Z. Iwats., Bull. Natl. Sci. Mus. Tokyo, n.s. 12: 295. 1969. (Inoue & Iwatsuki 1969; Iwatsuki & Suzuki 1982)
Fissidens borgenii Hampe, Bot. Zeitung (Berlin) 28: 36. 1870. (Hampe 1870; Magill 1981)
- =Fissidens sarcophyllus Müll. Hal. ex Dusén, Kongl. Svenska Vetensk. Acad. Handl., n.s. 28(2): 11. 1895. (Dusén 1895; Bruggeman-Nannenga 1993)
- =Fissidens haakonii Broth. & Bryhn, Forh. Vidensk.-Selsk. Kristiania 1911(4): 10. 1911. (Magill 1981)
- =Fissidens linearicaulis Broth. & Bryhn, Forh. Vidensk.-Selsk. Kristiania 1911(4): 9. 1911. (Magill 1981)
- =Fissidens borgenii var. obtusifolius Broth. ex Dixon, Trans. Roy. Soc. South Africa 8: 187. 1920. (Dixon 1920; Bruggeman-Nannenga 1993)
- =Fissidens paucilimbatus P. de la Varde, Rev. Bryol., n.s. 1: 88. 1928. (Bruggeman-Nannenga 1993)
- =Fissidens aoristoloma P. de la Varde, Rev. Bryol. Lichénol. 11: 179. 1939. (Potier de la Varde 1939; O'Shea 1995)
- =Fissidens intralimbatulus var. brevifolius P. de la Varde, Rev. Bryol. Lichénol. 18: 109. 1949. (Potier de la Varde 1949; Bruggeman-Nannenga 1997)
- =Fissidens norkettii P. de la Varde, Rev. Bryol. Lichénol. 22: 6. 1953. (Potier de la Varde 1953; Bruggeman-Nannenga 1993)
Fissidens bourgaeanus Besch., Mém. Soc. Natl. Sci. Nat. Cherbourg 16: 170. 1872. (Bescherelle 1872; Pursell 2007a)
- =Fissidens austroadianthoides Müll. Hal., Bull. Herb. Boissier 5: 547. 1897. (Müller 1897b; Pursell 2007a)
- =Fissidens incrassatolimbatus Cardot, Rev. Bryol. 37: 119. 1910. (Pursell 2007a)
Fissidens brachypus Mitt., J. Linn. Soc., Bot. 12: 590. 1869. (Mitten 1869; Pursell 2007a)

≡Conomitrium brachypus (Mitt.) A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1874–75: 128. 1876. (Jaeger 1876)
- =Schistophyllum brachypodum Lindb., Moss. Dillen. Hist. Musc.: 16. 1883.
- =Fissidens townsendii Bizot, Rev. Bryol. Lichénol. 40: 105. 1974. (Bizot 1974; Pursell 2007a)
Fissidens brassii E.B. Bartram, Farlowia 1: 41. 1943. (Bartram 1943; Pursell et al. 1992)
Fissidens brassii E.B. Bartram var. brassii
Fissidens brassii var. hebetatus (Catches.) I.G. Stone, J. Bryol. 18: 161. 1994. (Stone 1994a; Streimann & Klazenga 2002)

Basionym: Fissidens hebetatus Catches., Mosses South Australia: 77. 1980. (Catcheside 1980; Stone 1994a)
Fissidens braunii (Müll. Hal.) Dozy & Molk., Bryol. Jav. 1: 1. 1854. (Dozy & Molkenboer 1861; Eddy 1988)

Basionym: Conomitrium braunii Müll. Hal., Syn. Musc. Frond. 2: 527. 1851. (Müller 1851)
Fissidens brevidorsus Dixon, Anniv. Vol. Bot. Gard. Calcutta: 177. 1942. (Dixon 1942a; Higuchi & Nishimura 2003)
Fissidens brevifrons Mitt., Philos. Trans. 168: 396. 1879. (Mitten 1879; Bruggeman-Nannenga & Arts 2010)
- =Fissidens cadetii Bizot, Rev. Bryol. Lichénol. 40(2): 110. 1974. (Bizot 1974; Bruggeman-Nannenga & Arts 2010)
Fissidens brevinervis Broth., Sitzungsber. Akad. Wiss. Wien, Math.-Naturwiss. Kl., Abt. 1, 133: 559. 1924. (Brotherus 1924b; Bruggeman-Nannenga & Pursell 2014)
- =Fissidens cryptoneuron P. de la Varde, Rev. Bryol. Lichénol. 5: 208. 1933. (Bruggeman-Nannenga & Pursell 2014)
Fissidens brevipes Besch., J. Bot. (Morot) 5: 252. 1891. (Bescherelle 1891b; Pursell 2007a)
- =Moenkemeyera abrupta Broth., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 26, Afd. 3(7): 14. 1900. (Brotherus 1900; Pursell 2007a) ≡Fissidens abruptus (Broth.) Broth. ex Pursell, Bryologist 82: 60. 1979. (Pursell 1979; Pursell 2007a)
- =Fissidens flaveolus Sehnem, Pesquisas, Bot. 29: 25. 1972. (Sehnem 1972; Pursell 2007a)
Fissidens brindae Pursell & B.H. Allen, Trop. Bryol. 31: 146. 2010. (Pursell & Allen 2010)
Fissidens bryoides Hedw., Sp. Musc. Frond.: 153. 1801. (Hedwig 1801; Pursell 2007a)

≡Hypnum bryoides (Hedw.) L. ex Funck, Allg. Lit.-Zeitung (Jena) 1801(38): 301. 1801. ≡Dicranum bryoides (Hedw.) Sw., Monthly Rev. 34: 538. 1801. (Anonymous 1801) ≡Heterodon bryoides (Hedw.) Raf., Med. Repos., hexade 2, 5: 350. 1808. (Rafinesque 1808) ≡Fissidens viridulus var. bryoides (Hedw.) Röhl., Deutschl. Fl. (ed. 2), Kryptog. Gew. 3: 76. 1813, nom. illeg. (Röhling 1813) ≡Skitophyllum bryoides (Hedw.) Bach. Pyl., J. Bot. Agric. 4: 156. 1815. ≡Dicranodon bryoides (Hedw.) Béhéré, Séance Publique Soc. Libre Émul. Rouen 1826: 99. 1826. (Béhéré 1826) ≡Fissidens exilis var. major Hartm., Handb. Skand. Fl. (ed. 3) 2: 277. 1838. (Hartman 1838) ≡Schistophyllum bryoides (Hedw.) Lindb., Musci Scand.: 13. 1879. (Lindberg 1879)
- =Fissidens longifolius Brid., Muscol. Recent. Suppl. 1: 166. 1806. (Bridel 1806–1817; Pursell 2007a) ≡Skitophyllum longifolium (Brid.) Bach. Pyl., J. Bot. Agric. 4: 150. 1815. (Pursell 2007a) ≡Fissidens bryoides var. longifolius (Brid.) Hampe, Linnaea 13: 45. 1839. (Hampe 1839)
- =Skitophyllum gracile Bach. Pyl., J. Bot. Agric. 4: 157. 1815. (Flora of North America Editorial Committee 2007) ≡Fissidens gracilis (Bach. Pyl.) Brid., Bryol. Univ. 2: 700. 1827. (Bridel 1827; Flora of North America Editorial Committee 2007)
- =Fissidens bryoides var. elongatus Schultz, Prodr. Fl. Starg. Suppl.: 74. 1819. (Schultz 1819)
- =Fissidens bryoides var. asplenioides Huebener, Muscol. Germ.: 219. 1833, nom. illeg. (Huebener 1833)
- =Fissidens bryoides var. arboreus Griff., Calcutta J. Nat. Hist. 2: 503. 1842. (Griffith 1842)
- =Fissidens synoicus Sull., Musci Hep. U.S. (repr.): 103. 1856. (Sullivant 1856a; Pursell 2007b) ≡Fissidens incurvus var. synoicus (Sull.) Austin, Bot. Gaz. 2: 97. 1877.
- =Fissidens loscosianus Jur., Hedwigia 6: 145. 1867. (Churchill & Linares Castillo 1995)
- =Fissidens intralimbatus R. Ruthe, Hedwigia 9: 177. 1870. (Ruthe 1870; Pursell 2007a) ≡Fissidens viridulus var. intralimbatus (R. Ruthe) Düll, Bryol. Beitr. 4: 32. 1984. (Düll 1984)
- =Fissidens inconstans Schimp., Syn. Musc. Eur. (ed. 2): 114. 1876. (Corley 1980) ≡Fissidens incurvus var. inconstans (Schimp.) Husn., Muscol. Gall.: 50. 1884. (Husnot 1884–1894) ≡Fissidens bryoides var. inconstans (Schimp.) R. Ruthe, Laubm. Deutschl. 1: 430. 1887. (Limpricht 1885–1903) ≡Fissidens bryoides subsp. inconstans (Schimp.) P. de la Varde, Rev. Bryol. Lichénol. 15: 32. 1945. (Potier de la Varde 1945a)
- =Fissidens incurvus var. longipes Austin, Bot. Gaz. 2: 97. 1877. (Macoun & Kindberg 1892)
- =Fissidens incurvus var. monoicus Austin, Bot. Gaz. 2: 97. 1877. (Austin 1877)
- =Fissidens holomitrius Spruce, J. Bot. 18: 358. 1880. (Spruce 1880; Pursell 2007a)
- =Fissidens bryoides var. variabilis Husn., Fl. Mousses Nord. Ouest (ed. 2): 163. 1882. (Husnot 1882)
- =Fissidens bryoides var. elongatus Delogne, Ann. Soc. Belge Microscop. 7: 102. 1883, nom. illeg. (Delogne 1883)
- =Fissidens texanus Lesq., Man. Mosses N. America: 86. 1884. (Lesquereux & James 1884; Flora of North America Editorial Committee 2007) ≡Fissidens incurvus subsp. texanus (Lesq.) Kindb., Eur. N. Amer. Bryin. 2: 171. 1897[1898]. (Kindberg 1897) ≡Fissidens viridulus var. texanus (Lesq.) Grout, Moss Fl. N. Amer. 1: 12. 1936. (Grout 1936-1939)
- =Schistophyllum bryoides subsp. alpestre Lindb., Bot. Not. 1887: 40. 1887. ≡Fissidens bryoides subsp. alpestris (Lindb.) Limpr., Laubm. Deutschl. 3: 670. 1901. (Limpricht 1885–1903) ≡Fissidens alpestris (Lindb.) J.J. Amann, Fl. Mouss. Suisse 2: 407. 1918. (Amann & Meylan 1918; Corley 1980) ≡Fissidens bryoides var. alpestris (Lindb.) Waldh., Skand. Bladmossfl.: 340. 1939.
- =Fissidens caespitosus R. Ruthe, Laubm. Deutschl. 1: 431. 1887. (Limpricht 1885–1903; Wijk et al. 1962)
- =Fissidens incurvus var. brevifolius Renauld & Cardot, Bot. Gaz. 14: 94. 1889. (Crum & Anderson 1981) ≡Fissidens viridulus var. brevifolius (Renauld & Cardot) Grout, N. Amer. Fl. 15: 176. 1943. (Grout 1943) ≡Fissidens bryoides var. brevifolius (Renauld & Cardot) Wijk & Margad., Taxon 9: 189. 1960. (Wijk & Margadant 1960)
- =Schistophyllum bryoides var. intermedium Lindb., Kongl. Svenska Vetensk. Acad. Handl., n.s. 23(10): 14. 1890. (Lindberg & Arnell 1890) ≡Fissidens bryoides var. intermedius (Lindb.) Broth., Fl. Aziat. Ross.: 128. 1918, nom. illeg. (Brotherus 1918a)
- =Schistophyllum bryoides var. subimpar Lindb., Kongl. Svenska Vetensk. Acad. Handl., n.s. 23(10): 14. 1890. (Lindberg & Arnell 1890) ≡Fissidens bryoides var. subimpar (Lindb.) Broth., Fl. Aziat. Ross.: 128. 1918. (Brotherus 1918a) ≡Fissidens bryoides f. subimpar (Lindb.) Smirnova, Novosti Sist. Nizsh. Rast. 6: 255. 1969[1970]. (Smirnova 1970)
- =Schistophyllum bryoides var. varium Lindb., Kongl. Svenska Vetensk. Acad. Handl., n.s. 23(10): 14. 1890. (Lindberg & Arnell 1890) ≡Fissidens bryoides var. varius (Lindb.) Broth., Fl. Aziat. Ross. 13: 128. 1918. (Brotherus 1918a) ≡Fissidens bryoides f. varius (Lindb.) Smirnova, Novosti Sist. Nizsh. Rast. 6: 255. 1969[1970]. (Smirnova 1970)
- =Fissidens falcatulus Renauld & Cardot, Bot. Gaz. 19: 237. 1894. (Flora of North America Editorial Committee 2007) ≡Fissidens exiguus var. falcatulus (Renauld & Cardot) Grout, Moss Fl. N. Amer. 1: 15. 1936. (Grout 1936-1939)
- =Fissidens sinensibryoides Müll. Hal., Nuovo Giorn. Bot. Ital., n.s. 3: 90. 1896. (Müller 1896b; Li et al. 2001)
- =Fissidens angustilimbatus Broth., Hedwigia 38: 210. 1899, nom. illeg. (Brotherus 1899a; Noguchi & Iwatsuki 1987)
- =Fissidens bryoides var. lachenaudii Thér., Rev. Bryol. 28: 40. 1901. (Podpěra 1954)
- =Fissidens rivularis var. arenarius Velen., Rozpr. České Akad. Císaře Františka Josefa Vědy, Tř. 2, Vědy Math. Přír. 10(24): 5. 1901. (Bruggeman-Nannenga 1985) ≡Fissidens crassipes var. arenarius (Velen.) Pilous, Čas. Nár. Mus., Odd. Prír. 123: 93. 1960.
- =Fissidens bryoides var. acutifolius Velen., Rozpr. České Akad. Císaře Františka Josefa Vědy, Tř. 2, Vědy Math. Přír. 9(24): 4. 1901. ≡Fissidens bryoides f. acutifolius (Velen.) Podp., Consp. Musc. Eur.: 78. 1954. (Podpěra 1954)
- =Fissidens procumbens R. Ruthe ex Warnst., Krypt.-Fl. Brandenburg, Laubm. 2: 176. 1904, nom. illeg. (Warnstorf 1904–1906; Wijk et al. 1962) ≡Fissidens decumbens R. Ruthe ex Warnst., Krypt.-Fl. Brandenburg, Laubm. 2: 1124. 1906. (Warnstorf 1904–1906; Wijk et al. 1962) ≡Fissidens bryoides var. procumbens Podp., Consp. Musc. Eur.: 78. 1954. (Podpěra 1954) ≡Fissidens bryoides var. decumbens (R. Ruthe ex Warnst.) Podp., Consp. Musc. Eur.: 80. 1954. (Podpěra 1954)
- =Fissidens incurvus subsp. bottinii Zodda, Atti Rendiconti Dafnica Accad. Sci. Lett. Arti Acireale 1: 8. 1905. ≡Fissidens bryoides var. bottinii (Zodda) Podp., Consp. Musc. Eur.: 78. 1954. (Podpěra 1954)
- =Fissidens pusillus var. wilsonii Wheldon, J. Bot. 54: 319. 1916. (Norkett 1962) ≡Fissidens minutulus var. wilsonii (Wheldon) Wijk & Margad., Taxon 14: 197. 1965. (Wijk & Margadant 1965)
- =Fissidens bryoides var. subincurvus Latzel, Beih. Bot. Centralbl., Abt. 2, 48(2): 465. 1931. (Podpěra 1954)
- =Fissidens hawaiicus E.B. Bartram, Bernice P. Bishop Mus. Bull. 101: 15. 1933. (Bartram 1933a; Pursell & Hoe 1977)
- =Fissidens insularis E.B. Bartram, Bernice P. Bishop Mus. Bull. 101: 16. 1933, nom. illeg. (Bartram 1933a; Pursell & Hoe 1977) ≡Fissidens oahuensis E.B. Bartram, Occas. Pap. Bernice Pauahi Bishop Mus. 15: 95. 1939. (Bartram 1939a; Pursell & Hoe 1977)
- =Fissidens jap-amabilis Sakurai, Bot. Mag. (Tokyo) 51: 791. 1937. (Sakurai 1937; Noguchi & Iwatsuki 1987)
- =Fissidens minutulus f. australis Grout, Moss Fl. N. Amer. 1: 248. 1939. (Grout 1936-1939; Crum & Anderson 1981)
- =Fissidens andersonii Grout, Moss Fl. N. Amer. 1: 252. 1939. (Grout 1936-1939; Flora of North America Editorial Committee 2007)
- =Fissidens taiwanensis Herzog & Nog., J. Hattori Bot. Lab. 14: 57. 1955. (Herzog & Noguchi 1955; Li et al. 2001)
- =Fissidens borealis C. Gao, Fl. Musc. Chin. Boreali-Orient. 378. f. 66: 1. 1977. (Liaoning Forestry and Soil Institute 1977; Li et al. 2001)
Fissidens bryoides Hedw. var. bryoides
Fissidens bryoides var. caespitans Schimp., Syn. Musc. Eur. (ed. 2): 111. 1876. (Schimper 1876; Hodgetts et al. 2020)
- =Fissidens curnovii Mitt., J. Linn. Soc., Bot. 21: 556. 1885. (Mitten 1886b; Hodgetts et al. 2020) ≡Fissidens bryoides subsp. curnovii (Mitt.) Dixon, Stud. Handb. Brit. Mosses: 123. 1896. (Dixon 1896) ≡Fissidens bryoides var. curnovii (Mitt.) J.J. Amann, Beitr. Kryptogamenfl. Schweiz 7(2): 18. 1933.
Fissidens bryoides var. esquirolii (Thér.) Z. Iwats. & Tad. Suzuki, J. Hattori Bot. Lab. 51: 361. 1982. (Iwatsuki & Suzuki 1982; Thouvenot & Bardat 2010)

Basionym: Fissidens esquirolii Thér., Bull. Acad. Int. Géogr. Bot. 18: 251. 1908. (Thériot 1908; Iwatsuki & Suzuki 1982)
- =Fissidens ludovicae Broth. & Paris, Öfvers. Finska Vetensk.-Soc. Förh. 51A(17): 7. 1909. (Iwatsuki & Suzuki 1989)
- =Fissidens yamamotoi Sakurai, Bot. Mag. (Tokyo) 56: 218. 1942. (Iwatsuki 1991)
- =Fissidens shinii Sakurai, J. Jap. Bot. 27: 279. 1952. (Sakurai 1952b; Jia & He 2013)
Fissidens bryoides var. lateralis (Broth.) Z. Iwats. & Tad. Suzuki, J. Hattori Bot. Lab. 51: 363. 1982. (Iwatsuki & Suzuki 1982; Jia & He 2013)

Basionym: Fissidens lateralis Broth., Hedwigia 38: 210. 1899. (Brotherus 1899a; Iwatsuki & Suzuki 1982)
- =Fissidens lateralioides S. Okamura, J. Coll. Sci. Imp. Univ. Tokyo 38(4): 6. 1916. (Okamura 1916; Jia & He 2013)
- =Fissidens yasudae Broth. ex Ihsiba, Classif. Mosses Japan: 78. 1932. (Iwatsuki 1991)
Fissidens bryoides var. ramosissimus Thér., Ann. Cryptog. Exot. 5: 167. 1932. (Potier de la Varde 1932a; Jia & He 2013)
- =Fissidens perexiguus Müll. Hal., Nuovo Giorn. Bot. Ital., n.s. 4: 245. 1897. (Müller 1897g; Jia & He 2013)
- =Fissidens yokohamensis Paris, Index Bryol. Suppl.: 156. 1900. (Iwatsuki 1991)
- =Fissidens remotissimus Sakurai, Bot. Mag. (Tokyo) 47: 738. 1933. (Iwatsuki 1991)
- =Fissidens ryukyuensis E.B. Bartram, Bryologist 50: 160. 1947. (Bartram 1947a; Jia & He 2013)
Fissidens bushii (Cardot & Thér.) Cardot & Thér., Bot. Gaz. 37: 365. 1904. (Cardot & Thériot 1904; Pursell 2007b)

Basionym: Fissidens subbasilaris var. bushii Cardot & Thér., Bot. Gaz. 30: 16. 1900. (Cardot & Thériot 1900)
Fissidens cagoui Frank Müll., Pursell & Brugg.-Nann., Bryologist 106: 578. 2003[2004]. (Müller et al. 2003; Thouvenot & Bardat 2010)
Fissidens canalae Broth. & Paris, Öfvers. Finska Vetensk.-Soc. Förh. 51A(17): 8. 1909. (Brotherus 1909b; Miller et al. 1978)
Fissidens capitulatus Nog., J. Jap. Bot. 24: 146. 1949. (Noguchi 1949; Suzuki & Iwatsuki 2010)
Fissidens capriviensis Magill, Fl. S. Africa, Bryophyta 1: 45. 1981[1982]. (Magill 1981; O'Shea 2006)
Fissidens carnosus Broth., Rec. Bot. Surv. India 1: 314. 1899. (Brotherus 1899b; Pursell 1987)

≡Conomitrium carnosum (Broth.) Paris, Index Bryol. (ed. 2) 1: 351. 1904. (Paris 1904-1906)
Fissidens celticus Paton, Trans. Brit. Bryol. Soc. 4: 780. 1965. (Paton 1965; Hodgetts et al. 2020)
Fissidens ceylonensis Dozy & Molk., Musc. Frond. Archip. Ind.: 7. 1844. (Dozy & Molkenboer 1844; Bruggeman-Nannenga 1999)
- =Fissidens perpusillus Wilson ex Mitt., J. Proc. Linn. Soc., Bot., Suppl. 1(2): 141. 1859. (Mitten 1859; Wijk et al. 1962)
- =Fissidens bicolor Thwaites & Mitt., J. Linn. Soc., Bot. 13: 322. 1873. (Mitten 1873b; Eddy 1988)
- =Fissidens pennatulus Thwaites & Mitt., J. Linn. Soc., Bot. 13: 325. 1873. (Mitten 1873b; Eddy 1988)
- =Fissidens siamensis Broth., Bot. Tidsskr. 24: 117. 1901. (Brotherus 1901a; Eddy 1988)
- =Fissidens philonotulus Besch., Bull. Soc. Bot. France 48: 13. 1901. (Pursell 2002)
- =Fissidens ceylonensis subsp. simplex M. Fleisch., Musci Buitenzorg 1: 31. 1904. ≡Fissidens simplex (M. Fleisch.) Paris, Index Bryol. (ed. 2) 2: 227. 1904. (Paris 1904-1906; Tan & Choy 2002) ≡Fissidens ceylonensis var. simplex (M. Fleisch.) Nork., Mosses E. India 2: 514. 1971. (Gangulee 1971)
- =Fissidens ceylonensis var. acutifolius Dixon & P. de la Varde, Rev. Bryol. 52: 38. 1925. (Potier de la Varde 1925b)
- =Fissidens ceylonensis var. jhargramii Gangulee, Bull. Bot. Soc. Bengal 11: 72. 1957[1959]. (Gangulee 1957; Siddiqui 2007)
- =Fissidens subceylonensis Dury & Onr., Rev. Bryol. Lichénol. 42: 854. 1976. (Bizot 1976; Bruggeman-Nannenga 1999)
- =Fissidens subhumilis Catches., Mosses South Australia: 80. 1980. (Catcheside 1980; Catcheside & Stone 1988)
Fissidens chioneurus Müll. Hal., Linnaea 37: 167. 1873[1872]. (Müller 1872b; Bruggeman-Nannenga & Wigginton 2012)
- =Fissidens helenicus Mitt., St. Helena: 366. 1875. (Mitten 1875; Bruggeman-Nannenga & Wigginton 2012)
Fissidens chiricahuensis Pursell & B.H. Allen, Trop. Bryol. 31: 144. 2010. (Pursell & Allen 2010)
Fissidens chitralensis P. de la Varde, Nytt Mag. Bot. 3: 214. 1954. (Størmer 1954; Higuchi & Nishimura 2003)
Fissidens circinalis Mitt., J. Proc. Linn. Soc., Bot., Suppl. 1(2): 138. 1859. (Mitten 1859; Tan & Iwatsuki 1993)
Fissidens closteri Austin, Bull. Torrey Bot. Club 5(5): 21. 1874. (Austin 1874; Pursell 2007b)
Fissidens closteri Austin subsp. closteri
Fissidens closteri subsp. kiushiuensis (Sakurai) Z. Iwats., J. Jap. Bot. 33: 249. 1958. (Iwatsuki 1958; Pursell 2007b)

Basionym: Fissidens kiusiuensis Sakurai, Bot. Mag. (Tokyo) 47: 740. 1933. (Sakurai 1933; Iwatsuki 1958)
Fissidens coacervatus Brugg.-Nann., Proc. Kon. Ned. Akad. Wetensch., C 88: 194. 1985. (Bruggeman-Nannenga 1985; Dirkse et al. 1993)
Fissidens compienei Broth. & Paris, Öfvers. Finska Vetensk.-Soc. Förh. 51A(17): 6. 1909. (Brotherus 1909b; Iwatsuki & Suzuki 1989)
- =Fissidens affinis Broth. & Paris, Öfvers. Finska Vetensk.-Soc. Förh. 51A(17): 6. 1909. (Thouvenot & Bardat 2010)
- =Fissidens procerus Broth. & Paris, Öfvers. Finska Vetensk.-Soc. Förh. 53A(11): 9. 1911. (Thouvenot & Bardat 2010)
Fissidens consociatus Thér., Diagn. Esp. Var. Nouv. Mouss. 8: 2. 1910. (Thériot 1910b; Iwatsuki & Suzuki 1989)
Fissidens costivelatus Brugg.-Nann., J. Bryol. 31: 120. 2009. (Bruggeman-Nannenga 2009b; Búcaro et al. 2016)
Fissidens crassinervis Sande Lac., Sp. Nov. Musc. Ind.: 3. 1872. (Sande Lacoste 1872; Norris & Koponen 1987)
- =Fissidens kurandae Broth. & Watts, Proc. Linn. Soc. New South Wales 43: 550. 1918. (Brotherus & Watts 1918; Norris & Koponen 1987)
- =Fissidens immutatus Dixon, J. Indian Bot. 2: 179. 1921. (Dixon 1921; Norris & Koponen 1987)
Fissidens crassipes Wilson ex Bruch & Schimp., Bryol. Eur. 1: 197. pl. 100: crassipes (fasc. 42. Monogr. Suppl. 1: 1. pl. suppl. 1: crassipes). 1849. (Bruch & Schimper 1849; Bruggeman-Nannenga 1982)

≡Fissidens incurvus var. crassipes (Wilson ex Bruch & Schimp.) Schimp., Syn. Musc. Eur.: 104. 1860. (Schimper 1860) ≡Schistophyllum incurvum subsp. crassipes (Wilson ex Bruch & Schimp.) Lindb., Musci Scand.: 13. 1879. (Lindberg 1879) ≡Schistophyllum crassipes (Wilson ex Bruch & Schimp.) Kindb., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 7(9): 57. 1883. (Kindberg 1883) ≡Fissidens incurvus subsp. crassipes (Wilson ex Bruch & Schimp.) Boulay, Musc. France, Mousses: 528. 1884. (Boulay 1884) ≡Fissidens viridulus var. crassipes (Wilson ex Bruch & Schimp.) Husn., Muscol. Gall.: 50. 1884, nom. illeg. (Husnot 1884–1894)
- =Fissidens bryoides var. glaucus Brid., Bryol. Univ. 2: 688. 1827. (Bridel 1827; Bruggeman-Nannenga 2009a)
- =Fissidens incurvus var. fontanus Bruch & Schimp., Bryol. Eur. 1: 190. 99b (fasc. 17 Mon. 7 1b). 1843. (Bruch & Schimper 1843) ≡Fissidens fontanus (Bruch & Schimp.) Spruce, Musci Pyren.: 316. 1847, nom. illeg. (Spruce 1847; Wijk et al. 1962) ≡Fissidens viridulus var. fontanus (Bruch & Schimp.) Braithw., Brit. Moss Fl. 1: 71. 1881. (Braithwaite 1887-1905)
- =Fissidens viridulus var. major Wilson, Bryol. Brit.: 303. 1855. (Wilson 1855; Bruggeman-Nannenga 1982)
- =Fissidens mildeanus Schimp., Bot. Zeitung (Berlin) 20: 459. 1862. (Hill et al. 2006) ≡Fissidens viridulus var. mildeanus (Schimp.) Husn., Muscol. Gall.: 50. 1884. (Husnot 1884–1894) ≡Fissidens crassipes subsp. mildei Kindb., Eur. N. Amer. Bryin. 2: 170. 1897[1898]. (Kindberg 1897) ≡Fissidens crassipes var. mildeanus (Schimp.) Mönk., Laubm. Eur.: 139. 1927. (Mönkemeyer 1927)
- =Fissidens crassipes var. fontanus Rabenh., Krypt.-Fl. Sachsen 1: 612. 1863, nom. dub. (Bruggeman-Nannenga 1982)
- =Fissidens crassipes var. rivularis Rabenh., Krypt.-Fl. Sachsen 1: 612. 1863, nom. dub. (Bruggeman-Nannenga 1982)
- =Fissidens rufipes Schimp. ex A. Jaeger, Enum. Fissident.: 20. 1869, nom. illeg. (Hill et al. 2006)
- =Fissidens crassipes var. rufipes Schimp., Syn. Musc. Eur. (ed. 2): 113. 1876. (Bruggeman-Nannenga 1982)
- =Fissidens crassipes var. curtus R. Ruthe, Laubm. Deutschl. 1: 441. 1887. (Limpricht 1885–1903) ≡Fissidens curtus (R. Ruthe) R. Ruthe, Krypt.-Fl. Brandenburg, Laubm. 2: 174. 1904. (Warnstorf 1904–1906; Wijk et al. 1962)
- =Fissidens crassipes var. submarginatus M. Fleisch. & Warnst., Bot. Centralbl. 65: 298. 1896. (Bruggeman-Nannenga 1982)
- =Fissidens bambergeri var. aegyptiacus Renauld & Cardot, Bull. Soc. Roy. Bot. Belgique 41(1): 47. 1905. (Agnew & Vondráček 1975)
- =Fissidens mouretii Corb., Rev. Bryol. 40: 8. 1913. (Hill et al. 2006)
- =Fissidens crassipes var. pusillus Guim., Bróteria, Sér. Bôt. 16: 98. 1918. (Podpěra 1954) ≡Fissidens crassipes f. pusillus (Guim.) Podp., Consp. Musc. Eur.: 82. 1954.
- =Fissidens crassipes var. lacustris J.J. Amann, Fl. Mouss. Suisse 2: 378. 1918. (Amann & Meylan 1918)
- =Fissidens mnevidis J.J. Amann, Rev. Bryol. 49: 51. 1922. (Amann 1922; Heyn & Herrnstadt 2004)
- =Fissidens crassipes f. cirrifer Latzel, Beih. Bot. Centralbl., Abt. 2, 48: 467. 1931. (Podpěra 1954)
- =Fissidens crassipes var. rekaensis Pilous, Nova Hedwigia 5: 477. 1963. (Grom 1963)
Fissidens crassipes Wilson ex Bruch & Schimp. subsp. crassipes
Fissidens crassipes subsp. warnstorfii (M. Fleisch.) Brugg.-Nann., Proc. Kon. Ned. Akad. Wetensch., C 85: 74. 1982. (Bruggeman-Nannenga 1982; Hodgetts et al. 2020)

Basionym: Fissidens warnstorfii M. Fleisch., Bot. Centralbl. 65: 298. 1896. (Fleischer & Warnstorf 1896; Bruggeman-Nannenga 1982)

≡Fissidens rufulus subsp. warnstorfii (M. Fleisch.) Kindb., Ottawa Naturalist 14: 84. 1900.
- =Fissidens alexandrinus Lorentz, Abh. Königl. Akad. Wiss. Berlin 1867: 17. 1868. (Lorentz 1867; Bruggeman-Nannenga 1997)
- =Fissidens crassipes var. philibertii Besch., Cat. Mouss. Algérie: 7. 1882. ≡Fissidens philibertii (Besch.) P. de la Varde, Rev. Bryol. 49: 5. 1922. (O'Shea 2006)
Fissidens crenulatus Mitt., J. Proc. Linn. Soc., Bot., Suppl. 1(2): 140. 1859. (Mitten 1859; Eddy 1988)
- =Conomitrium sinense Rabenh., Bryoth. Eur. 25: n. 1873. (Li et al. 2001) ≡Fissidens sinensis (Rabenh.) Broth., Nat. Pflanzenfam. I(3): 356. 1901. (Li et al. 2001)
- =Fissidens titalyanus Müll. Hal., Linnaea 37: 165. 1873[1872]. (Eddy 1988) ≡Fissidens crenulatus var. titalyanus (Müll. Hal.) Gangulee, Mosses E. India 2: 506. 1971. (Gangulee 1971)
- =Fissidens titalyanus var. elatior Müll. Hal., Linnaea 37: 166. 1873[1872]. (Müller 1872b)
- =Fissidens treubii M. Fleisch., Hedwigia 38(Beibl.): 125. 1899. (Eddy 1988)
- =Fissidens papillulosus Broth., Bot. Tidsskr. 24: 117. 1901. (Brotherus 1901a; Wongkuna et al. 2009)
- =Fissidens hueckii P. de la Varde, Rev. Bryol. Lichénol. 15: 145. 1945. (Potier de la Varde 1946; Li et al. 2001)
- =Fissidens potieri Pócs, Rev. Bryol. Lichénol. 34: 805. 1966[1967]. (Pócs 1966; Pócs 1977)
- =Fissidens hillianus H.A. Mill. & D.R. Sm., Micronesica 4: 218. 1968[1969]. (Miller & Smith 1968; Eddy 1988)
Fissidens crenulatus Mitt. var. crenulatus
Fissidens crenulatus var. elmeri (Broth.) Z. Iwats. & Tad. Suzuki, J. Hattori Bot. Lab. 51: 386. 1982. (Iwatsuki & Suzuki 1982; Seppelt & Stone 2016)

Basionym: Fissidens elmeri Broth., Leafl. Philipp. Bot. 2: 652. 1909. (Brotherus 1909a; Seppelt & Stone 2016)
Fissidens crenulatus var. pursellii (S.H. Lin) T.Y. Chiang & C.M. Kuo, Taiwania 34: 100. 1989. (Chiang & Kuo 1989)

Basionym: Fissidens pursellii S.H. Lin, Yushania 1(3): 56. 1984. (Lin 1984; Chiang & Kuo 1989)
Fissidens crispulus Brid., Muscol. Recent. Suppl. 4: 187. 1819[1818]. (Bridel 1819; Bruggeman-Nannenga & Arts 2010)

≡Fissidens tamarindifolius var. crispulus (Brid.) Brid., Bryol. Univ. 2: 686. 1827. (Bridel 1827) ≡Fissidens bryoides var. crispulus (Brid.) Wijk & Margad., Taxon 8: 106. 1959. (Wijk & Margadant 1959)
- =Fissidens sylvaticus Griff., Calcutta J. Nat. Hist. 2: 507. 1842. (Griffith 1842; Kürschner 2000)
- =Fissidens falcatus Wilson, Fl. Nov.-Zel. 2: 62. 1854. (Kürschner 2000)
- =Fissidens zippelianus Dozy & Molk., Syst. Verz.: 29. 1854. (Dozy & Molkenboer 1854c; Tan & Choy 2002) ≡Fissidens sylvaticus var. zippelianus (Dozy & Molk.) Gangulee, Mosses E. India 2: 537. 1971. (Gangulee 1971)
- =Fissidens incrassatus Sull. & Lesq., Char. New Musci: 1. 1859. (Sullivant & Lesquereux 1859; Li et al. 2001)
- =Fissidens obscurus Mitt., J. Proc. Linn. Soc., Bot., Suppl. 1(2): 139. 1859. (Mitten 1859) ≡Fissidens subobscurus Paris, Index Bryol.: 487. 1896. (Gangulee 1971)
- =Fissidens curvifolius Mitt., Trans. Linn. Soc. London 23: 55. 1860. (Mitten 1860; Bruggeman-Nannenga 1997)
- =Fissidens terminiflorus Thwaites & Mitt., J. Linn. Soc., Bot. 13: 322. 1873. (Mitten 1873b; O'Shea 2006)
- =Fissidens mammillosus Müll. Hal., Linnaea 39: 349. 1875. (Müller 1875; Tan & Choy 2002)
- =Conomitrium amphibium Müll. Hal., Linnaea 39: 356. 1875. (Müller 1875; Bruggeman-Nannenga 1997) ≡Octodiceras amphibium (Müll. Hal.) A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1874–75: 136. 1876. (Jaeger 1876; Bruggeman-Nannenga 1997) ≡Fissidens amphibius (Müll. Hal.) Broth., Nat. Pflanzenfam. I(3): 362. 1901. (Bruggeman-Nannenga 1997)
- =Fissidens comorensis Müll. Hal., Linnaea 40: 233. 1876. (Müller 1876; Bruggeman-Nannenga 2009a)
- =Fissidens procumbens Mitt., Philos. Trans. 168: 395. 1879. (Mitten 1879; Bruggeman-Nannenga & Arts 2010)
- =Fissidens glaucescens var. mahorensis Besch., Ann. Sci. Nat., Bot., sér. 7, 2: 86. 1885. ≡Fissidens mahorensis (Besch.) Müll. Hal., Gen. Musc. Frond.: 65. 1900. (Müller 1901; Bruggeman-Nannenga & Arts 2010)
- =Fissidens moenkemeyeri Müll. Hal., Flora 69: 504. 1886. (Müller 1886; Tan & Choy 2002)
- =Fissidens arbogastii Renauld & Cardot, Rev. Bot. Bull. Mens. 9: 289. 1891. (Renauld 1891; Kürschner 2000)
- =Fissidens coriaceifolius Müll. Hal. ex Dusén, Kongl. Svenska Vetensk. Acad. Handl., n.s. 28(2): 6. 1895. (Dusén 1895; Tan & Choy 2002)
- =Fissidens pulcher Müll. Hal. ex Dusén, Kongl. Svenska Vetensk. Acad. Handl., n.s. 28(2): 8. 1895. (Dusén 1895; Tan & Choy 2002)
- =Fissidens kerianus Broth., Öfvers. Finska Vetensk.-Soc. Förh. 36: 155. 1895. (Streimann & Klazenga 2002)
- =Fissidens lutescens Broth., Rec. Bot. Surv. India 1(12): 315. 1899. (Brotherus 1899b; Gangulee 1971)
- =Fissidens elimbatus Broth., Rec. Bot. Surv. India 1: 316. 1899. (Brotherus 1899b; Bruggeman-Nannenga 2019a) ≡Fissidens walkeri var. elimbatus (Broth.) Dixon, J. Indian Bot. 2: 177. 1921. (Dixon 1921)
- =Fissidens cameruniae Müll. Hal., Gen. Musc. Frond.: 65. 1900. (Müller 1901; Li et al. 2001)
- =Fissidens incurvescens Broth., Fl. Schutzgeb. Südsee: 81. 1901[1900]. (Li et al. 2001) ≡Fissidens zippelianus f. incurvescens (Broth.) M. Fleisch., Musci Buitenzorg 1: 45. 1904.
- =Fissidens sakourae Broth. & Paris, Bull. Herb. Boissier, sér. 2, 2: 921. 1902. (Li et al. 2001)
- =Fissidens savellii Paris & Renauld, Rev. Bryol. 29: 2. 1902. (Bruggeman-Nannenga & Arts 2010) ≡Fissidens zippelianus subsp. savellii (Paris & Renauld) Paris, Rev. Bryol. 29: 77. 1902. ≡Fissidens sylvaticus subsp. savellii (Paris & Renauld) Wijk & Margad., Taxon 8: 106. 1959. (Wijk & Margadant 1959)
- =Fissidens maniae Paris & Renauld, Rev. Bryol. 30: 94. 1903. (Bruggeman-Nannenga & Arts 2010)
- =Fissidens zippelianus subsp. aculeatus M. Fleisch., Musci Buitenzorg 1: 46. 1904. ≡Fissidens aculeatus (M. Fleisch.) M. Fleisch., Musci Buitenzorg 1: 380. 1904. (Kürschner 2000) ≡Fissidens sylvaticus subsp. aculeatus (M. Fleisch.) Wijk & Margad., Taxon 8: 106. 1959. (Wijk & Margadant 1959)
- =Fissidens zippelianus var. irroratus M. Fleisch., Musci Buitenzorg 1: 45. 1904. ≡Fissidens sylvaticus var. irroratus (M. Fleisch.) Wijk & Margad., Taxon 8: 106. 1959. (Wijk & Margadant 1959)
- =Fissidens crispatulus Renauld & Cardot, Bull. Soc. Roy. Bot. Belgique 41(1): 49. 1905. (Tan & Choy 2002)
- =Fissidens fuscolutescens Cardot, Rev. Bryol. 35: 65. 1908. (Cardot 1908; Tan & Choy 2002)
- =Fissidens laurentiorum Cardot, Rev. Bryol. 35: 65. 1908. (Cardot 1908; Pursell et al. 1992)
- =Fissidens fremyi P. de la Varde, Mouss. Oubangui 1(3): 19. 1928. (Potier de la Varde 1928b; Tan & Choy 2002)
- =Fissidens mangarevensis var. peracutus Dixon, Proc. Linn. Soc. New South Wales 55: 272. 1930. (Dixon & Greenwood 1930; Iwatsuki & Suzuki 1996)
- =Fissidens salicifolius Sakurai, Bot. Mag. (Tokyo) 47: 741. 1933. (Tan & Choy 2002)
- =Fissidens osadae Sakurai, Bryologist 39: 5. 1936. (Tan & Choy 2002)
- =Fissidens pepuensis P.C. Chen, Sunyatsenia 6: 189. 1941. (Chen 1941; Li et al. 2001)
- =Fissidens sylvaticus var. mammosus Dixon ex E.B. Bartram, Occas. Pap. Bernice Pauahi Bishop Mus. 19(11): 221. 1948. (Bartram 1948; Iwatsuki & Suzuki 1996)
- =Fissidens terrae-reginae E.B. Bartram, Farlowia 4: 235. 1952. (Bartram 1952a; Seppelt & Stone 2016)
- =Fissidens sylvaticus var. ramosus Banu-Fattah, Bangladesh J. Bot. 28: 177. 1999. (Banu-Fattah & Syed 1999; Siddiqui 2007)
Fissidens crispulus Brid. var. crispulus
Fissidens crispulus var. fontanus (M. Fleisch.) Suleiman, H. Akiyama & B.C. Tan, J. Hattori Bot. Lab. 99: 136. 2006. (Suleiman et al. 2006)

Basionym: Fissidens zippelianus var. fontanus M. Fleisch., Hedwigia 38(Beibl.): 128. 1899. (Müller 1899)

≡Fissidens sylvaticus var. fontanus (M. Fleisch.) Giesy & P.W. Richards, Trans. Brit. Bryol. Soc. 3: 577. 1959. (Giesy & Richards 1959)
Fissidens crispulus var. nelliampathii K.M. Manjula & Manju, Taiwania 65(3): 299. 2020. (Manjula & Manju 2020)
Fissidens crispulus var. robinsonii (Broth.) Z. Iwats. & Z.H. Li, Moss Fl. China 2: 26. 2001. (Li et al. 2001; Beever 2014)

Basionym: Fissidens robinsonii Broth., Philipp. J. Sci., C. 13: 204. 1918. (Brotherus 1918b; Li et al. 2001)

≡Fissidens zippelianus var. robinsonii (Broth.) Z. Iwats. & Tad. Suzuki, J. Hattori Bot. Lab. 67: 289. 1989. (Iwatsuki & Suzuki 1989; Beever 2014)
- =Fissidens tenuirostris Thér., Diagn. Esp. Var. Nouv. Mouss. 8: 3. 1910. (Thériot 1910b; Thouvenot & Bardat 2010)
Fissidens crispus Mont., Ann. Sci. Nat., Bot., sér. 2, 9: 57. 1838. (Montagne 1838; Pursell 2007a)
- =Fissidens repandus Wilson, Hooker's J. Bot. Kew Gard. Misc. 3: 52. 1851. (Mitten 1851; Pursell 2007a)
- =Fissidens schmidii Müll. Hal., Bot. Zeitung (Berlin) 11: 18. 1853, nom. dub. (Bruggeman-Nannenga 2013c) ≡Fissidens bryoides subsp. schmidii (Müll. Hal.) Nork., Mosses E. India 2: 471. 1971. (Gangulee 1971) ≡Fissidens bryoides var. schmidii (Müll. Hal.) R.S. Chopra & S.S. Kumar, Ann. Cryptog. Phytopathol. (New Delhi) 5: 43. 1981. (Chopra & Kumar 1981)
- =Fissidens limbatus Sull., Expl. Railroad Mississippi Pacific, Descr. Moss. Liverw.: 185. 1856[1857]. (Sullivant 1856b; Hill et al. 2006)
- =Fissidens tortilis Hampe & Müll. Hal., Bot. Zeitung (Berlin) 22: 340. 1864. (Müller 1864; Pursell 2007a)
- =Fissidens cyprius Jur., Ins. Cypern: 167. 1865. (Unger & Kotschy 1865; Corley et al. 1981) ≡Fissidens bryoides subsp. cyprius (Jur.) Kindb., Eur. N. Amer. Bryin. 2: 170. 1897[1898]. (Kindberg 1897) ≡Fissidens bambergeri var. cyprius (Jur.) G. Roth, Eur. Laubm. 1: 371. 1904. (Roth 1904–1905)
- =Fissidens pachyloma Sande Lac., Sp. Nov. Musc. Ind.: 3. 1872, nom. illeg. (Sande Lacoste 1872; Wijk et al. 1962) ≡Fissidens hasskarlii A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1874–75: 89. 1876. (Jaeger 1876; Wijk et al. 1969)
- =Fissidens pusillus Schimp., Syn. Musc. Eur. (ed. 2): 113. 1876, nom. illeg. (Podpěra 1954)
- =Fissidens subcrispus Besch., Mém. Soc. Natl. Sci. Nat. Cherbourg, sér. 3, 21: 260. 1877. (Pursell 2007a)
- =Fissidens lonchothecius Müll. Hal., Linnaea 42: 239. 1879. (Müller 1879b; Pursell 2007a)
- =Fissidens fendleri Müll. Hal., Linnaea 42: 465. 1879. (Müller 1879c; Pursell 2007a)
- =Conomitrium biareolatum Müll. Hal., Linnaea 42: 466. 1879. (Müller 1879c; Churchill et al. 2000) ≡Fissidens biareolatus (Müll. Hal.) Broth., Nat. Pflanzenfam. I(3): 356. 1901. (Churchill et al. 2000)
- =Fissidens synanthus Mitt., J. Linn. Soc., Bot. 21: 554. 1885. (Mitten 1886b; Podpěra 1954) ≡Schistophyllum synanthum (Mitt.) Lindb., Bidr. Nordens Mossfl.: 71. 1887. (Lindberg 1887; Podpěra 1954)
- =Fissidens reclinatulus Müll. Hal. ex Renauld & Cardot, Bull. Soc. Roy. Bot. Belgique 31(1): 153. 1893. (Pursell 2007a)
- =Fissidens carionis Müll. Hal., Bull. Herb. Boissier 5: 171. 1897. (Müller 1897a; Pursell 2007a)
- =Fissidens fasciculatobryoides Müll. Hal., Bull. Herb. Boissier 5: 172. 1897. (Müller 1897a; Pursell 2007a)
- =Fissidens oligophyllus Müll. Hal., Nuovo Giorn. Bot. Ital., n.s. 4: 6. 1897. (Müller 1897f; Pursell 2007a)
- =Fissidens aequalis E.S. Salmon, Ann. Bot. (Oxford) 13: 120. 1899. (Salmon 1899; Pursell 2007a)
- =Fissidens circinatulus Besch., Rev. Bryol. 28: 64. 1901. (Pursell 2007a)
- =Fissidens pusillus var. brevifolius Cardot & Thér., Bot. Gaz. 37: 365. 1904. ≡Fissidens limbatus var. brevifolius (Cardot & Thér.) Grout, N. Amer. Fl. 15: 173. 1943. (Grout 1943; Pursell 2007b)
- =Fissidens herzogii R. Ruthe, Ber. Schweiz. Bot. Ges. 15: 58. 1905. (Hill et al. 2006) ≡Fissidens bryoides subsp. herzogii (R. Ruthe) Podp., Consp. Musc. Eur.: 79. 1954. (Podpěra 1954)
- =Fissidens chilensis Dusén, Ark. Bot. 6(8): 1. 1906. (Dusén 1906; Pursell 2007a)
- =Fissidens subaloma Dusén, Ark. Bot. 6(8): 2. 1906. (Dusén 1906; Pursell 2007a)
- =Fissidens mobukensis G. Negri, Ann. Bot. (Rome) 7: 163. 1908. (Bruggeman-Nannenga 2013c)
- =Fissidens pringlei Cardot, Rev. Bryol. 36: 69. 1909. (Cardot 1909b; Pursell 2007a)
- =Fissidens reclinatulus var. brevifolius Cardot, Rev. Bryol. 36: 69. 1909. (Cardot 1909b; Pursell 1994b) ≡Fissidens tortilis var. brevifolius (Cardot) Thér., Smithsonian Misc. Collect. 78(2): 9. 1926. (Thériot 1926b)
- =Fissidens heribaudii Broth. & Paris, Rev. Bryol. 40: 33. 1913. (Cardot 1913; Pursell 2007a)
- =Fissidens pauper Herzog, Biblioth. Bot. 87: 166. 1916. (Herzog 1916; Pursell 2007a)
- =Fissidens sanctae-crucis Broth., Biblioth. Bot. 87: 26. 1916. (Herzog 1916; Pursell 2007a)
- =Fissidens costesii Thér., Revista Chilena Hist. Nat. 25: 292. 1921. (Thériot 1921a; Pursell 2007a)
- =Fissidens alticaulis Broth., Ergebn. Bot. Exp. Südbras., Musci: 272. 1924. (Pursell 2007a)
- =Fissidens pseudoincurvatus Müll. Hal. ex Broth., Ergebn. Bot. Exp. Südbras., Musci: 272. 1924. (Pursell 2007a)
- =Fissidens pseudoincurvatus var. latifolius Broth., Ergebn. Bot. Exp. Südbras., Musci: 272. 1924. (Pursell 1994c)
- =Fissidens fernandezianus Broth., Nat. Hist. Juan Fernandez 2: 416. 1924. (Brotherus 1924c; Pursell 2007a)
- =Fissidens longidecurrens Thér., Smithsonian Misc. Collect. 78(2): 10. 1926. (Thériot 1926b; Pursell 2007a)
- =Fissidens flexuosus Thér., Smithsonian Misc. Collect. 78(2): 11. 1926. (Thériot 1926b; Pursell 2007a)
- =Fissidens arsenei Broth. & Paris ex Thér., Smithsonian Misc. Collect. 78(2): 8. 1926. (Thériot 1926b; Pursell 2007a)
- =Fissidens glossobryoides Dixon, Proc. Linn. Soc. New South Wales 55: 269. 1930. (Dixon & Greenwood 1930; Iwatsuki & Suzuki 1996)
- =Fissidens cyprius f. subdioicus Latzel, Beih. Bot. Centralbl., Abt. 2, 48: 466. 1931. (Podpěra 1954)
- =Fissidens hoeegii P. de la Varde, Kongel. Norske Vidensk. Selsk. Forh. 5: 130. 1932. (Bruggeman-Nannenga 2013c)
- =Fissidens limbatus var. ensiformis Grout, Moss Fl. N. Amer. 1: 13. 1936. (Grout 1936-1939; Pursell 2007b)
- =Fissidens cataractarum Demaret & P. de la Varde, Bull. Jard. Bot. État Bruxelles 27: 755. 1957. (Demaret & Potier de la Varde 1957; Bruggeman-Nannenga 2013c)
Fissidens cucullatus I.G. Stone, J. Bryol. 15: 737. 1989. (Stone 1989; Stone 1994a)
Fissidens curticostatus Brugg.-Nann., K. Hyl. & Pursell, J. Bryol. 31: 120. 2009. (Bruggeman-Nannenga 2009b; Hylander et al. 2017)
Fissidens curvatoinvolutus Dixon, Notes Roy. Bot. Gard. Edinburgh 19: 279. 1938. (Dixon 1938b; Iwatsuki & Suzuki 1999)

≡Fissidens involutus subsp. curvatoinvolutus (Dixon) Gangulee, Mosses E. India 2: 548. 1971. (Gangulee 1971)
Fissidens curvatus Hornsch., Linnaea 15: 148. 1841. (Hornschuch 1841; Pursell 2007a)
- =Fissidens laxifolius Hornsch., Linnaea 15: 149. 1841. (Hornschuch 1841; Pursell 2007a) ≡Conomitrium laxifolium (Hornsch.) Müll. Hal., Syn. Musc. Frond. 2: 527. 1851. (Müller 1851; Pursell 2007a)
- =Fissidens laxifolius var. brevisetus Hornsch., Linnaea 15: 149. 1841. (Hornschuch 1841; O'Shea 2006) ≡Conomitrium laxifolium var. brevisetum (Hornsch.) A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1874–75: 127. 1876. (Jaeger 1876)
- =Fissidens cuspidatus Müll. Hal., Linnaea 17: 588. 1843. (Müller 1843; Pursell 2007a)
- =Fissidens cuspidatus var. angustifolius Müll. Hal., Linnaea 17: 588. 1843. (Müller 1843; O'Shea 2006)
- =Fissidens pungens Müll. Hal. & Hampe, Linnaea 26: 502. 1853[1855]. (Pursell 2007a)
- =Conomitrium gracile Hampe, Bot. Zeitung (Berlin) 17: 197. 1859. (Müller 1859; Pursell 2007a) ≡Fissidens gracilis (Hampe) A. Jaeger, Enum. Fissident.: 12. 1869, nom. illeg. (Pursell 2007a)
- =Conomitrium lindigii Hampe, Linnaea 31: 532. 1862. (Hampe 1862; Pursell 2007a) ≡Fissidens lindigii (Hampe) A. Jaeger, Enum. Fissident.: 12. 1869. (Pursell 2007a)
- =Fissidens algarvicus Solms, Tent. Bryo-Geogr. Algarv.: 41. 1868. (Bruggeman-Nannenga & Arts 2010) ≡Fissidens incurvus var. algarvicus (Solms) Husn., Fl. Mousses Nord. Ouest (ed. 2): 54. 1882. ≡Fissidens pusillus var. algarvicus (Solms) Boulay ex Husn., Muscol. Gall.: 49. 1884, nom. illeg. (Husnot 1884–1894)
- =Fissidens tequendamensis Mitt., J. Linn. Soc., Bot. 12: 601. 1869. (Mitten 1869; Pursell 2007a)
- =Fissidens luteoviridis Lindb. ex Ångstr., Öfvers. Kongl. Vetensk.-Akad. Förh. 33(4): 48. 1876. (Ångström 1876; Pursell 2007a)
- =Fissidens macleanus J. Shaw, Cape Monthly Mag. 17: 314. 1878. (Shaw 1878; Bruggeman-Nannenga 1997)
- =Fissidens indistinctus Müll. Hal., Linnaea 42: 238. 1879. (Müller 1879b; Pursell 2007a)
- =Fissidens indistinctus var. major Müll. Hal., Linnaea 42: 238. 1879, nom. dub. (Müller 1879b; Pursell 2007a)
- =Schistophyllum orrii Lindb., Rev. Bryol. 7: 97. 1880. (Pursell 2007a) ≡Fissidens orrii (Lindb.) Braithw., Brit. Moss Fl. 1: 73. 1881. (Braithwaite 1887-1905; Pursell 2007a)
- =Fissidens sardagnae Venturi, Rev. Bryol. 10: 93. 1883. (Bruggeman-Nannenga & Arts 2010)
- =Fissidens macleai J. Shaw ex Kindb., Enum. Bryin. Exot., Suppl. 1: 90. 1889, nom. illeg. (Kindberg 1889; O'Shea 2006)
- =Fissidens wildii Broth., Öfvers. Finska Vetensk.-Soc. Förh. 33: 94. 1891. (Streimann & Klazenga 2002)
- =Fissidens campyloneurus Beckett, Trans. & Proc. New Zealand Inst. 25: 295. 1893. (Pursell 2007a)
- =Fissidens sericeus Broth., Bot. Jahrb. Syst. 20: 181. 1894. (Brotherus 1894; Bruggeman-Nannenga 1997)
- =Fissidens perexilis Broth., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 21, Afd. 3(3): 13. 1895. (Brotherus 1895a; Pursell 2007a)
- =Fissidens capillisetus Broth., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 3(3): 17. 1895. (Brotherus 1895a; Pursell 2007a)
- =Fissidens strictulus Müll. Hal., Nuovo Giorn. Bot. Ital., n.s. 5: 159. 1898. (Müller 1898b; Pursell 2007a)
- =Fissidens pycnophyllus Müll. Hal., Hedwigia 38: 57. 1899. (Müller 1899; Pursell 2007a)
- =Fissidens minutissimus Besch. & Geh., Rev. Bryol. 28: 62. 1901. (Pursell 2007a)
- =Fissidens laxereticulatus Besch. & Geh., Rev. Bryol. 28: 63. 1901. (Pursell 2007a)
- =Fissidens brotheri Dusén, Ark. Bot. 6(8): 3. 1906, nom. illeg. (Dusén 1906; Pursell 2007a) ≡Fissidens brotherianus Paris, Revista Chilena Hist. Nat. 25: 290. 1921. (Thériot 1921a; Pursell 2007a) ≡Fissidens valdiviensis Herzog, Hedwigia 64: 9. 1923, nom. illeg. (Pursell 2007a)
- =Fissidens francii Thér., Bull. Acad. Int. Géogr. Bot. 17: 307. 1907. (Thériot 1907a; Pursell 2007a)
- =Fissidens attenuatus Bryhn, Kongel. Norske Vidensk. Selsk. Skr. (Trondheim) 1908(8): 16. 1908. (Hagen 1908; Bruggeman-Nannenga 2013c)
- =Fissidens minusculus Broth. & Paris, Öfvers. Finska Vetensk.-Soc. Förh. 51A(17): 7. 1909. (Pursell 2007a)
- =Fissidens fritzei Geh., Biblioth. Bot. 73: 55. 1910. (Geheeb & Herzog 1910; Bruggeman-Nannenga 1997)
- =Fissidens exsul Dixon, J. Bot. 48: 147. 1910. (Dixon 1910a; Bruggeman-Nannenga 1997)
- =Fissidens aberrans Broth. & Dixon, J. Bot. 53: 261. 1915. (Dixon 1915; Pursell 2007a)
- =Fissidens bockii Herzog, Biblioth. Bot. 87: 25. 1916. (Herzog 1916; Pursell 2007a)
- =Fissidens aristatus Broth., Proc. Linn. Soc. New South Wales 41: 578. 1916. (Brotherus 1916; Pursell 2007a)
- =Fissidens sordidevirens Broth., Proc. Linn. Soc. New South Wales 41: 579. 1916. (Brotherus 1916; Stone 1990c)
- =Fissidens brotherianus var. longisetus Thér., Revista Chilena Hist. Nat. 25: 290. 1921. (Thériot 1921a; Pursell 2007a)
- =Fissidens angustinervis Thér., Recueil Publ. Soc. Havraise Études Diverses 90: 80. 1923. (Thériot 1923; Bruggeman-Nannenga & Arts 2010)
- =Fissidens diversiformis Broth., Acta Horti Gothob. 1: 190. 1924. (Brotherus 1924a; Pursell 2007a)
- =Fissidens subinclinatulus Müll. Hal. ex Broth., Ergebn. Bot. Exp. Südbras., Musci: 273. 1924. (Pursell 2007a)
- =Fissidens crassicuspis Broth., Nat. Hist. Juan Fernandez 2: 417. 1924. (Brotherus 1924c; Pursell 2007a)
- =Fissidens filirameus R.S. Williams, Publ. Field Mus. Nat. Hist., Bot. Ser. 4(5): 126. 1927. (Williams 1927; Pursell 2007a)
- =Fissidens subxiphioides Broth., Symb. Sin. 4: 9. 1929. (Brotherus 1929; Pursell 2007a)
- =Fissidens algarvicus f. concolor Latzel, Beih. Bot. Centralbl., Abt. 2, 48: 467. 1931. (Podpěra 1954)
- =Fissidens lindigii var. latifolius P. de la Varde & Thér., Mem. Soc. Cub. Hist. Nat. "Felipe Poey" 13: 207. 1939. (Thériot 1939; Pursell 1994c)
- =Fissidens homomallulus Müll. Hal. ex Dixon, Notes Roy. Bot. Gard. Edinburgh 20: 94. 1948. (Dixon 1948; Seppelt & Stone 2016)
- =Fissidens saxatilis Tuzibe & Nog., J. Jap. Bot. 24: 145. 1949. (Noguchi 1949; Pursell 2007a)
- =Fissidens milobakeri L.F. Koch, Bryologist 54: 206. 1951. (Koch 1951; Pursell 2007a)
- =Fissidens flavosetus Pursell, Bryologist 63: 98. 1960. (Pursell 1960; Pursell 2007a)
- =Fissidens rambii Gangulee, Mosses E. India 2: 475. 1971. (Gangulee 1971; Pursell 2007a)
- =Fissidens minimus Schiavone, Lilloa 35(3): 51. 1981. (Schiavone 1981; Pursell 2007a)
Fissidens curvatus Hornsch. subsp. curvatus
Fissidens curvatus Hornsch. var. curvatus
Fissidens curvatus var. inclinabilis (Müll. Hal. ex Dixon) J.E. Beever, Bryologist 98: 315. 1995. (Fife 1995; Beever 2014)

Basionym: Fissidens inclinabilis Müll. Hal. ex Dixon, New Zealand Inst. Bull. 3(3): 100. 1923. (Dixon 1923; Beever 2014)

≡Fissidens pungens var. inclinabilis (Müll. Hal. ex Dixon) Sainsbury, Rev. Bryol. Lichénol. 21: 214. 1952. (Sainsbury 1952)
- =Fissidens semilimbatus Müll. Hal. & Hampe, Linnaea 26: 501. 1853[1855]. (Stone & Beever 1996)
- =Fissidens subelamellosus Dixon, New Zealand Inst. Bull. 3(6): 364. 1929. (Dixon 1929; Beever 2014)
Fissidens curvatus var. pachyloma (Müll. Hal.) Brugg.-Nann., J. Hattori Bot. Lab. 81: 158. 1997. (Bruggeman-Nannenga 1997; O'Shea 2006)

Basionym: Fissidens pachyloma Müll. Hal., Bot. Zeitung (Berlin) 22: 341. 1864. (Müller 1864; Bruggeman-Nannenga 1997)
Fissidens curvatus subsp. sanctae-helenae Brugg.-Nann. & M. Wigginton, J. Bryol. 34(3): 213. 2012. (Bruggeman-Nannenga & Wigginton 2012)
Fissidens cuspidifer Dixon, Proc. Linn. Soc. New South Wales 55: 271. 1930. (Dixon & Greenwood 1930; Iwatsuki & Suzuki 1989)
Fissidens cuynetii Bizot, Acta Bot. Acad. Sci. Hung. 18: 21. 1973. (Bizot 1973; O'Shea 2006)
Fissidens cyatheicola Brugg.-Nann., Lindbergia 36: 14. 2013. (Bruggeman-Nannenga 2013a; Bruggeman-Nannenga & Arts 2010)
Fissidens cylindraceus Mitt., J. Linn. Soc., Bot. 12: 590. 1869. (Mitten 1869; Pursell 2007a)

≡Conomitrium cylindraceum (Mitt.) A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1874–75: 128. 1876. (Jaeger 1876)
Fissidens cylindrothecus Pursell & J. Aguirre, Novon 1: 196. 1991. (Pursell & Aguirre Ceballos 1991; Pursell 2007a)
Fissidens dalamair H. Akiyama, Acta Phytotax. Geobot. 44: 21. 1993. (Akiyama 1993)
Fissidens daltoniifolius Müll. Hal., J. Mus. Godeffroy 3(6): 59. 1874. (Müller 1874a; Schultze-Motel 1974)
Fissidens danckelmannii Müll. Hal., Flora 69: 505. 1886. (Müller 1886; O'Shea 2006)
Fissidens darutyi Schimp. ex Besch., Ann. Sci. Nat., Bot., sér. 6, 9: 334. 1880. (Bescherelle 1879; Bruggeman-Nannenga & Arts 2010)
- =Fissidens darutyi f. latifolia P. de la Varde, Recueil Publ. Soc. Havraise Études Diverses 99(1): 133. 1932. (Thériot 1932)
Fissidens darwinianus Catches. & I.G. Stone, J. Adelaide Bot. Gard. 11: 3. 1988. (Catcheside & Stone 1988)
Fissidens dasyphus Welw. & Duby, Mém. Soc. Phys. Genève 21: 224. 1872. (Duby 1872; Diop et al. 2018)
- =Conomitrium undatum Müll. Hal., Linnaea 39: 362. 1875. (Müller 1875; Bruggeman-Nannenga 2024) ≡Fissidens undatus (Müll. Hal.) Paris, Index Bryol.: 489. 1896. (Bruggeman-Nannenga 2024)
- =Fissidens glauculus Müll. Hal. ex Dusén, Kongl. Svenska Vetensk. Acad. Handl., n.s. 28(2): 12. 1895. (Dusén 1895; Diop et al. 2018)
- =Fissidens muelleri Dusén, Kongl. Svenska Vetensk. Acad. Handl., n.s. 28(2): 14. 1895, nom. illeg. (Dusén 1895; Bruggeman-Nannenga 1993) ≡Fissidens occultifolius Müll. Hal. ex Paris, Index Bryol. (ed. 2) 2: 217. 1904. (Paris 1904-1906; Bruggeman-Nannenga 1993)
- =Fissidens dupuisii Renauld & Cardot, Bull. Soc. Roy. Bot. Belgique 35(1): 306. 1897. (Bruggeman-Nannenga 1993) ≡Fissidens glauculus subsp. dupuisii (Renauld & Cardot) P. de la Varde, Ann. Cryptog. Exot. 2: 286. 1929. (Potier de la Varde 1929a) ≡Fissidens glauculus var. dupuisii (Renauld & Cardot) P. de la Varde, Mém. Soc. Sci. Nat. Math. Cherbourg 42: 28. 1936.
- =Fissidens dicranelloides Broth. & Paris, Rev. Bryol. 31: 42. 1904. (Schultze-Motel 1975) ≡Fissidens glauculus subsp. dicranelloides (Broth. & Paris) P. de la Varde, Ann. Cryptog. Exot. 2: 286. 1929. (Potier de la Varde 1929a)
- =Fissidens circinicaulis Cardot, Rev. Bryol. 35: 65. 1908. (Diop et al. 2018) ≡Fissidens glauculus var. circinicaulis (Cardot) P. de la Varde, Ann. Cryptog. Exot. 2: 286, 289. 1929. (Potier de la Varde 1929a)
- =Fissidens tisserantii Broth. & P. de la Varde, Bull. Soc. Bot. France 72: 793. 1925. (Bruggeman-Nannenga 1993)
- =Fissidens tisserantii var. sublaevifolius P. de la Varde, Arch. Bot. Bull. Mens. 3: 3. 1929. (Potier de la Varde 1929b; Diop et al. 2018)
- =Fissidens glauculus var. aculeifrons P. de la Varde, Bull. Mus. Natl. Hist. Nat., Sér. 2, 3(8): 771. 1931. (Diop et al. 2018)
- =Fissidens rugifolius Dixon, J. Bot. 76: 220. 1938. (Dixon 1938a; Bruggeman-Nannenga 1993)
Fissidens dealbatus Hook. f. & Wilson, Fl. Nov.-Zel. 2: 63. 1854. (Hooker 1855; Bruggeman-Nannenga 2017)

≡Schistophyllum dealbatum (Hook. f. & Wilson) Lindb., Utkast Eur. Bladmoss.: 16. 1878. (Lindberg 1878)
- =Fissidens splachnoides Broth., Öfvers. Finska Vetensk.-Soc. Förh. 35: 37. 1893. (Brotherus 1893b; Seppelt & Stone 2016) ≡Conomitrium splachnoides (Broth.) Müll. Hal., Gen. Musc. Frond.: 74. 1900. (Müller 1901; Seppelt & Stone 2016)
- =Conomitrium amplirete Müll. Hal., Gen. Musc. Frond.: 73. 1900. (Müller 1901; Seppelt & Stone 2016) ≡Fissidens ampliretis (Müll. Hal.) Broth., Nat. Pflanzenfam. I(3): 353. 1901. (Seppelt & Stone 2016)
- =Fissidens molliculus P. de la Varde, Rev. Bryol. Lichénol. 7: 227. 1934[1935]. (Bruggeman-Nannenga 2017)
- =Fissidens hedbergii P. de la Varde, Ark. Bot., n.s. 3(8): 129. 1955[1957]. (Potier de la Varde 1955a; Bruggeman-Nannenga 2017) ≡Fissidens enervis subsp. hedbergii (P. de la Varde) Bizot, Acta Bot. Acad. Sci. Hung. 25: 239. 1979[1980]. (Bizot & Pócs 1979)
- =Fissidens hookerioides Bizot & Onr., Rev. Bryol. Lichénol. 42: 843. 1976. (Bizot 1976; Bruggeman-Nannenga 2017)
Fissidens decursivus Müll. Hal., Linnaea 42: 245. 1879. (Müller 1879b; Greene 1986)
Fissidens delicatulus Ångstr., Öfvers. Kongl. Vetensk.-Akad. Förh. 29(4): 20. 1872. (Ångström 1872; Pursell & Hoe 1977)
Fissidens dendeliensis Paris & Broth., Rev. Bryol. 31: 84. 1904. (Paris 1904b; O'Shea 2006)
Fissidens dendrophilus Brugg.-Nann. & Pursell, Bryologist 93: 335. 1990. (Bruggeman-Nannenga & Pursell 1990; Pursell 2007a)
Fissidens dentatolimbatus Dixon, Ann. Bryol. 9: 62. 1937. (Dixon 1937a; Townsend 1978)
Fissidens diaphanodontus (P. de la Varde) Bizot, Acta Bot. Acad. Sci. Hung. 25: 239. 1979[1980]. (Bizot & Pócs 1979; O'Shea 2006)

Basionym: Moenkemeyera diaphanodonta P. de la Varde, Rev. Bryol. Lichénol. 20: 4. 1951. (Potier de la Varde 1951)
Fissidens diaphanus Bizot, Rev. Bryol. Lichénol. 38: 594. 1973. (Bizot 1971-72; Bizot et al. 1986–1987)

Replaced synonym: Fissidens fallaciosus P. de la Varde ex Bizot, Rev. Bryol. Lichénol. 36: 107. 1968[1969], nom. illeg. (Bizot 1968b)
Fissidens dietrichiae Müll. Hal., Linnaea 37: 146. 1873[1872]. (Müller 1872a; Bruggeman-Nannenga 1997)
- =Fissidens zollingeri var. major Besch., Ann. Sci. Nat., Bot., sér. 5, 18: 200. 1873. (Bescherelle 1873; Bruggeman-Nannenga 1997)
- =Fissidens praemollis Broth., Proc. Linn. Soc. New South Wales 41: 578. 1916. (Brotherus 1916; Streimann & Klazenga 2002)
Fissidens discolor Wilson ex Mitt., J. Proc. Linn. Soc., Bot., Suppl. 1(2): 139. 1859. (Mitten 1859; O'Shea 2002)
Fissidens dissitifolius Sull., Musci Cub. Wright.: 274. 1861. (Sullivant 1861; Pursell 2007a)

≡Conomitrium dissitifolium (Sull.) Müll. Hal., Gen. Musc. Frond.: 74. 1900. (Müller 1901)
Fissidens diversifolius Mitt., J. Proc. Linn. Soc., Bot., Suppl. 1(2): 140. 1859. (Mitten 1859; Iwatsuki & Suzuki 1982)
- =Fissidens plicatulus Thér., Monde Pl. 9(45): 21. 1907. (Thériot 1907b; Iwatsuki & Wu 1988)
- =Fissidens jeyporensis Dixon & P. de la Varde, Ann. Cryptog. Exot. 1: 38. 1928. (Potier de la Varde 1928a; Iwatsuki & Suzuki 1982)
- =Fissidens uii Broth. ex Ihsiba, Classif. Mosses Japan: 77. 1932. (Noguchi & Iwatsuki 1987)
- =Fissidens doii Sakurai, Bot. Mag. (Tokyo) 47: 736. 1933. (Noguchi & Iwatsuki 1987)
- =Fissidens uii var. brevifolius Ihsiba, Trans. Sapporo Nat. Hist. Soc. 13: 395. 1934. (Iwatsuki 1991)
- =Fissidens mayebarae Sakurai, Bot. Mag. (Tokyo) 50: 514. 1936. (Noguchi & Iwatsuki 1987)
- =Fissidens rubricaulis Dixon, J. Bombay Nat. Hist. Soc. 39: 772. 1937. (Dixon 1937b; Gangulee 1971) ≡Fissidens diversifolius var. rubricaulis (Dixon) Nork., Mosses E. India 2: 494. 1971. (Gangulee 1971)
- =Fissidens lativaginatus E.B. Bartram, Rev. Bryol. Lichénol. 23: 242. 1954. (Bartram 1954b; Tan & Iwatsuki 1993)
- =Fissidens diversifolioides Gangulee, Bull. Bot. Soc. Bengal 11: 67. 1957[1959]. (Gangulee 1957; Gangulee 1971)
Fissidens dongensis Besch., Bull. Soc. Bot. France 41: 79. 1894. (Bescherelle 1894; Tan & Iwatsuki 1993)
Fissidens dubius P. Beauv., Prodr. Aethéogam.: 57. 1805. (Palisot de Beauvois 1805; Pursell 2007a)

≡Skitophyllum adianthoides var. marginatum P. Beauv. ex Bach. Pyl., J. Bot. Agric. 4: 163. 1815. ≡Fissidens adianthoides var. marginatus (P. Beauv. ex Bach. Pyl.) Brid., Bryol. Univ. 2: 704. 1827. (Bridel 1827)
- =Fissidens cristatus Wilson ex Mitt., J. Proc. Linn. Soc., Bot., Suppl. 1: 137. 1859. (Mitten 1859; Pursell 2007a) ≡Schistophyllum cristatum (Wilson ex Mitt.) Lindb., Finland 1886(268): 3. 1886. (Pursell 2007a) ≡Fissidens adianthoides subsp. cristatus (Wilson ex Mitt.) Kindb., Eur. N. Amer. Bryin. 2: 167. 1897[1898]. (Kindberg 1897) ≡Fissidens adianthoides var. cristatus (Wilson ex Mitt.) F. Koppe, Abh. Landesmus. Prov. Westfalen Mus. Naturk. 10(2): 20. 1939.
- =Fissidens circinans Schimp. ex Müll. Hal., Bot. Zeitung (Berlin) 22: 340. 1864. (Müller 1864; Pursell 2007a)
- =Fissidens adianthoides var. tener Molendo, Laubm. Oberfrank.: 110. 1868. (Walther & Molendo 1868; Podpěra 1954)
- =Fissidens decipiens De Not., Atti Reale Univ. Genova 1: 479. 1869. (Pursell 2007a) ≡Schistophyllum decipiens (De Not.) Lindb., Musci Scand.: 13. 1879. (Lindberg 1879; Pursell 2007a) ≡Fissidens adianthoides subsp. decipiens (De Not.) Boulay, Musc. France, Mousses: 521. 1884. (Boulay 1884)
- =Fissidens rupestris Wilson, Proc. Nat. Hist. Soc. Glasgow 1: 91. 1869. (Pursell 2007a) ≡Fissidens adianthoides var. rupestris (Wilson) Limpr., Krypt.-Fl. Schlesien 1: 187. 1876. (Limpricht 1876)
- =Fissidens floridanus Lesq. & James, Proc. Amer. Acad. Arts 14: 137. 1879. (Pursell 2007a)
- =Fissidens collinus Mitt., J. Linn. Soc., Bot. 21: 559. 1885. (Mitten 1886b; Pursell 2007a) ≡Fissidens adianthoides var. collinus (Mitt.) Braithw., Brit. Moss Fl. 1: 84A. 1887. (Braithwaite 1887-1905) ≡Schistophyllum adianthoides subsp. collinum (Mitt.) Lindb., Meddeland. Soc. Fauna Fl. Fenn. 15: 186. 1889. ≡Schistophyllum collinum (Mitt.) Lindb., Meddeland. Soc. Fauna Fl. Fenn. 15: 255. 1889. (Pursell 2007a)
- =Fissidens cristatus var. brevifolius Lindb. ex Braithw., Brit. Moss Fl. 1: 84A. 1887. (Braithwaite 1887-1905; Podpěra 1954) ≡Fissidens adianthoides var. brevifolius (Lindb. ex Braithw.) J.J. Amann, Fl. Mouss. Suisse 2: 75. 1918. (Amann & Meylan 1918)
- =Fissidens adianthoides var. savatieri Besch., Ann. Sci. Nat., Bot., sér. 7, 17: 335. 1893. ≡Fissidens savatieri (Besch.) Paris, Index Bryol.: 484. 1896. (Iwatsuki 1991)
- =Fissidens decipiens var. winonensis Renauld & Cardot, Bot. Gaz. 22: 50. 1896. ≡Fissidens cristatus var. winonensis (Renauld & Cardot) Grout, Moss Fl. N. Amer. 1: 22. 1936. (Grout 1936-1939; Pursell 2007b)
- =Fissidens obsoletomarginatus Müll. Hal., Nuovo Giorn. Bot. Ital., n.s. 3: 89. 1896. (Müller 1896b; Pursell 2007a)
- =Fissidens velenovskyi Podp., Oesterr. Bot. Z. 50: 11. 1900. (Pursell 2007a) ≡Fissidens cristatus var. velenovskyi (Podp.) Warnst., Märk. Laubm.: 185. 1904. ≡Fissidens cristatus f. velenovskyi (Podp.) Podp., Consp. Musc. Eur.: 86. 1954.
- =Fissidens microjaponicus Paris, Rev. Bryol. 35: 125. 1908. (Pursell 2007a)
- =Fissidens erosodentatus Cardot, Bull. Soc. Bot. Genève 1: 121. 1909. (Pursell 2007a)
- =Fissidens decipiens var. polysetus J.J. Amann, Fl. Mouss. Suisse 2: 378. 1918. (Amann & Meylan 1918)
- =Fissidens cristatus f. major Mönk., Laubm. Eur.: 136. 1927. (Mönkemeyer 1927; Podpěra 1954)
- =Fissidens cristatus f. corticicola Latzel, Beih. Bot. Centralbl., Abt. 2, 48: 469. 1931. (Podpěra 1954)
- =Fissidens pseudogymnogynus Toyama, Acta Phytotax. Geobot. 4(4): 216. 1935. (Pursell 2007a)
- =Fissidens adianthoides var. semicristatus Grout, Moss Fl. N. Amer. 1: 21. 1936. (Grout 1936-1939; Pursell 2007b)
- =Fissidens koshikijimensis Sakurai, Bryologist 39: 4. 1936. (Pursell 2007a)
- =Fissidens cristatus f. immarginatus Habeeb, Rhodora 54: 156. 1952. (Habeeb 1952; Ireland, Jr. et al. 1987)
Fissidens dubius P. Beauv. var. dubius
Fissidens dubius var. mucronatus (Breidl. ex Limpr.) Kartt., Hedenäs & L. Söderstr., Ann. Bot. Fenn. 29: 120. 1992. (Söderström et al. 1992; Hodgetts et al. 2020)

Basionym: Fissidens decipiens var. mucronatus Breidl. ex Limpr., Laubm. Deutschl. 1: 452. 1887. (Limpricht 1885–1903)

≡Fissidens adianthoides var. mucronatus (Breidl. ex Limpr.) J.J. Amann, Fl. Mouss. Suisse 2: 75. 1918. ≡Fissidens cristatus var. mucronatus (Breidl. ex Limpr.) Waldh., Förteckn. Skand. Växt., Moss. (ed. 2): 18. 1937. (Weimarck 1937) ≡Fissidens cristatus f. mucronatus (Breidl. ex Limpr.) Podp., Consp. Musc. Eur.: 86. 1954.
Fissidens duttonii H.A. Mill., Phytologia 34: 149. 1976. (Miller 1976; Miller et al. 1978)
Fissidens ecuadorensis Pursell & Brugg.-Nann., Fl. Neotrop. Monogr. 101: 250. 2007. (Pursell 2007a)
Fissidens elegans Brid., Muscol. Recent. Suppl. 1: 167. 1806. (Bridel 1806–1817; Pursell 2007a)

≡Skitophyllum elegans (Brid.) Bach. Pyl., J. Bot. Agric. 4: 152. 1815.
- =Fissidens ravenelii Sull., Mem. Amer. Acad. Arts, n.s. 4: 171. 1849. (Sullivant 1849; Florschütz-de Waard 2011)
- =Fissidens cuspidulatus Sull., Musci Cub. Wright.: 274. 1861. (Sullivant 1861; Pursell 2007a)
- =Fissidens densiretis Sull., Musci Cub. Wright.: 274. 1861. (Sullivant 1861; Pursell 2007a)
- =Fissidens flavinervis Mitt., J. Linn. Soc., Bot. 12: 592. 1869. (Mitten 1869; Pursell 2007a)
- =Fissidens caldensis Ångstr., Öfvers. Kongl. Vetensk.-Akad. Förh. 33(4): 47. 1876. (Ångström 1876; Pursell 2007a)
- =Fissidens papillosus Lindb. ex Ångstr., Öfvers. Kongl. Vetensk.-Akad. Förh. 33(4): 48. 1876, nom. illeg. (Ångström 1876; Pursell 2007a) ≡Fissidens lindbergii Sauerb., Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1877–78: 392. 1880, nom. illeg. (Jaeger & Sauerbeck 1879; Pursell 2007a) ≡Fissidens fratris Paris, Index Bryol.: 469. 1896. (Pursell 2007a)
- =Fissidens glaucifrons Besch., J. Bot. (Morot) 5: 252. 1891. (Pursell 2007a)
- =Fissidens excavatus Besch., Rev. Bryol. 18: 50, 52. 1891. (Pursell 2007a)
- =Fissidens hemiloma var. atrovirens Besch., Rev. Bryol. 18: 53. 1891. (Pursell 1994c)
- =Fissidens paulensis Broth., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 21, Afd. 3(3): 14. 1895. (Brotherus 1895a; Pursell 2007a)
- =Fissidens crispofalcatulus Broth., Hedwigia 34: 121. 1895. (Brotherus 1895b; Pursell 2007a)
- =Fissidens nanoloma Müll. Hal., Gen. Musc. Frond.: 61. 1900. (Müller 1901; Pursell 2007a)
- =Fissidens camptodontius Kindb., Rev. Bryol. 28: 56. 1901. (Pursell 2007a)
- =Fissidens tejoenis Broth., Hedwigia 45: 265. 1906. (Brotherus 1906a; Pursell 2007a)
- =Fissidens leptopodus Cardot, Rev. Bryol. 37: 120. 1910. (Pursell 2007a)
- =Fissidens baldwinii Broth., Bernice P. Bishop Mus. Bull. 40: 4. 1927. (Brotherus 1927; Pursell & Hoe 1977)
- =Fissidens densiretis var. latifolius Grout, N. Amer. Fl. 15: 181. 1943. (Grout 1943; Pursell 2007a)
- =Fissidens bishopii Hoe, Bryologist 75: 85. 1972. (Hoe 1972; Pursell & Hoe 1977)
- =Fissidens celatocognatus Pursell & Brugg.-Nann., Caribbean J. Sci. 27: 187. 1991. (Pursell & Bruggeman-Nannenga 1991; Pursell 2007a)
Fissidens elizbrowniae B.C. Tan & Wongkuna, Telopea 17: 202. 2014. (Printarakul et al. 2014)
Fissidens ellipticoides Brugg.-Nann. & Kürschner, J. Bryol. 26: 107. 2004. (Bruggeman-Nannenga & Kürschner 2004; Kürschner & Frey 2011)
Fissidens elongatus Mitt., J. Proc. Linn. Soc., Bot., Suppl. 1(2): 139. 1859. (Mitten 1859; Suzuki & Iwatsuki 2012)
Fissidens enervis Sim, Trans. Roy. Soc. South Africa 15: 187. 1926. (Sim 1926; Bruggeman-Nannenga 2017)
Fissidens erectothorsbornei Tad. Suzuki, Hattoria 5: 88. 2014. (Suzuki 2014)
Fissidens eremicus J. Guerra & J.A. Jiménez, J. Bryol. 43(3): 270. 2021. (Guerra et al. 2021)
Fissidens ernestii Irmsch., Notizbl. Bot. Gart. Berlin-Dahlem 7: 537. 1921. (Irmscher 1921)
Fissidens erosulus (Müll. Hal.) Paris, Actes Soc. Linn. Bordeaux 49(3): 143. 1895. (Paris 1895; Bruggeman-Nannenga 2009a)

Basionym: Conomitrium erosulum Müll. Hal., Linnaea 39: 367. 1875. (Müller 1875)
- =Fissidens eckendorffii P. de la Varde, Rev. Bryol. Lichénol. 9: 197. 1937. (Bruggeman-Nannenga 1997)
- =Fissidens sigmocarpoides P. de la Varde, Rev. Bryol. Lichénol. 11: 167. 1939. (Potier de la Varde 1939; Bruggeman-Nannenga 2009a)
Fissidens euryloma P. de la Varde, Rev. Bryol., n.s. 4: 59. 1931. (Potier de la Varde 1931b; O'Shea 2006)
Fissidens excurrentinervis R.S. Williams, Bull. New York Bot. Gard. 3(9): 112. 1903. (Williams 1903; Pursell 2007a)
- =Fissidens ovicarpus Broth., Bot. Jahrb. Syst. 56(Beibl. 123): 6. 1920. (Pursell 2007a)
Fissidens exiguus Sull., Amer. J. Sci. Arts, ser. 2, 1: 72. 1846. (Gray 1846; Erzberger 2016)

≡Fissidens incurvus var. exiguus (Sull.) Austin, Musci Appalach.: 103. 1870. (Austin 1870) ≡Fissidens bryoides var. exiguus (Sull.) J.J. Amann & Meyl., Fl. Mouss. Suisse 1: 63, 208. 1918. (Amann & Meylan 1918)
- =Fissidens subimmarginatus H. Philib., Rev. Bryol. 11: 56. 1884. (Bruggeman-Nannenga 1978b) ≡Fissidens exiguus subsp. subimmarginatus (H. Philib.) Kindb., Eur. N. Amer. Bryin. 2: 171. 1897[1898]. (Kindberg 1897)
Fissidens exilis Hedw., Sp. Musc. Frond.: 152. 1801. (Hedwig 1801; Pursell 2007b)

≡Dicranum bryoides var. minus Turner, Muscol. Hibern. Spic.: 53. 1804. (Turner 1804a) ≡Dicranum exile (Hedw.) Muhl., Cat. Pl. Amer. Sept.: 98. 1813. ≡Fissidens viridulus var. exilis (Hedw.) Röhl., Deutschl. Fl. (ed. 2), Kryptog. Gew. 3: 76. 1813, nom. illeg. (Röhling 1813) ≡Skitophyllum exile (Hedw.) Bach. Pyl., J. Bot. Agric. 4: 145. 1815. ≡Dicranum palmatum var. exile (Hedw.) Arn., Disp. Méth. Mousses: 27. 1825. ≡Dicranum viridulum var. exile (Hedw.) Duby, Bot. Gall. 2: 567. 1830, nom. illeg. ≡Schistophyllum exile (Hedw.) Lindb., Musci Scand.: 13. 1879. (Lindberg 1879)
- =Bryum viridulum Dicks., Fasc. Pl. Crypt. Brit. 4: 8. 1801. (Dickson 1801; Wijk et al. 1959)
- =Fissidens bloxamii Wilson, London J. Bot. 4: 195. 1845. (Wilson 1845; Ignatov & Afonina 1992) ≡Schistophyllum bloxamii (Wilson) Lindb., Kongl. Svenska Vetensk. Acad. Handl., n.s. 23(10): 14. 1890. (Lindberg & Arnell 1890; Ignatov & Afonina 1992)
- =Hypnum minutum Wilson, Bryol. Brit.: 302. 1855. (Wilson 1855; Wijk et al. 1964)
Fissidens extremiorientalis Ignatov & Ignatova, Arctoa 32(2): 213. 2023. (Ignatova et al. 2023)
Fissidens ezukanmae Brugg.-Nann., Cryptog., Bryol. 40(3): 16. 2019. (Bruggeman-Nannenga 2019b)
Fissidens faniensis (Besch.) Paris, Actes Soc. Linn. Bordeaux 49(3): 144. 1895. (Paris 1895; Tan & Iwatsuki 1993)

Basionym: Conomitrium faniense Besch., Bull. Soc. Bot. France 41: 78. 1894. (Bescherelle 1894)
Fissidens fasciculatus Hornsch., Linnaea 15: 155. 1841. (Hornschuch 1841; Suzuki & Iwatsuki 2013c)
- =Fissidens linealis Bruch & Schimp., Bryol. Eur. 1: 196. 1843. (Bruch & Schimper 1843; Wijk et al. 1962)
Fissidens fautauae H. Whittier & H.A. Mill., Bryologist 70: 83. 1967. (Whittier & Miller 1967; Whittier 1976)
Fissidens filiformis Z. Iwats., Mem. New York Bot. Gard. 45: 635. 1987. (Iwatsuki 1987; Suzuki & Iwatsuki 2013b)
Fissidens firmus Mitt., J. Proc. Linn. Soc., Bot., Suppl. 1(2): 139. 1859. (Mitten 1859; Bruggeman-Nannenga et al. 2015)
- =Fissidens plumula Thwaites & Mitt., J. Linn. Soc., Bot. 13: 325. 1873. (Mitten 1873b; Bruggeman-Nannenga 2019a)
- =Fissidens giesenhagenii Broth. ex M. Fleisch., Hedwigia 44: 314. 1905. (Fleischer 1905; Iwatsuki & Mohamed 1987)
Fissidens fissicaulis Müll. Hal., J. Mus. Godeffroy 3(6): 59. 1874. (Müller 1874a; Miller et al. 1978)
Fissidens flabellatus Hornsch., Fl. Bras. 1(2): 91. 1840. (Hornschuch 1840; Pursell 2007a)
- =Fissidens pseudostipitatus Müll. Hal., Hedwigia 39: 238. 1900. (Pursell 2007a)
- =Fissidens longifalcatus Müll. Hal., Hedwigia 39: 239. 1900. (Pursell 2007a)
Fissidens flabellulus Thwaites & Mitt., J. Linn. Soc., Bot. 13: 324. 1873. (Mitten 1873b; Bruggeman-Nannenga & Pursell 1995)

≡Conomitrium flabellulum (Thwaites & Mitt.) Müll. Hal., Gen. Musc. Frond.: 75. 1900. (Müller 1901)
- =Fissidens serrifolius E.B. Bartram, Occas. Pap. Bernice Pauahi Bishop Mus. 19(11): 221. 1948. (Bartram 1948; Iwatsuki & Suzuki 1996)
Fissidens flabellulus var. eachamensis I.G. Stone, J. Bryol. 18: 177. 1994. (Stone 1994b; Streimann & Klazenga 2002)
Fissidens flabellulus Thwaites & Mitt. var. flabellulus
Fissidens flaccidus Mitt., Trans. Linn. Soc. London 23: 56. 1860. (Mitten 1860; Bruggeman-Nannenga 2017)
- =Fissidens macrophyllus Mitt., J. Linn. Soc., Bot. 12: 600. 1869. (Mitten 1869; Pursell 2007a)
- =Fissidens mollis Mitt., J. Linn. Soc., Bot. 12: 600. 1869. (Mitten 1869; Florschütz-de Waard 2011)
- =Fissidens uncinatus Ångstr., Öfvers. Kongl. Vetensk.-Akad. Förh. 33(4): 48. 1876. (Ångström 1876; Pursell 2007a)
- =Fissidens maceratus Mitt., Trans. & Proc. Roy. Soc. Victoria 19: 91. 1882. (Mitten 1883; Tan & Choy 2002)
- =Fissidens atroviridis Besch., Ann. Sci. Nat., Bot., sér. 7, 2: 86. 1885. (Bruggeman-Nannenga 2017) ≡Conomitrium atroviride (Besch.) Müll. Hal., Gen. Musc. Frond.: 74. 1900. (Müller 1901; Bruggeman-Nannenga 2017)
- =Fissidens cellulosus Mitt., J. Linn. Soc., Bot. 22: 319. 1886. (Mitten 1886a; Bruggeman-Nannenga 2017)
- =Fissidens luridus Renauld & Cardot, Bull. Soc. Roy. Bot. Belgique 29(1): 172. 1890. (Renauld & Cardot 1890; Bruggeman-Nannenga 2017)
- =Fissidens bryodictyon Besch., Rev. Bryol. 18: 50. 1891. (Pursell 2007a)
- =Fissidens palmatulus Besch., Rev. Bryol. 18: 50. 1891. (Pursell 2007a)
- =Fissidens catumbensis Broth., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 3(3): 13. 1895. (Brotherus 1895a; Pursell 2007a)
- =Fissidens schwackeanus Broth., Hedwigia 34: 119. 1895. (Brotherus 1895b; Pursell 2007a)
- =Fissidens splachnobryoides Broth., Fl. Schutzgeb. Südsee: 81. 1901[1900]. (Tan & Choy 2002)
- =Fissidens brachyneuron Broth. & M. Fleisch., Musci Buitenzorg 1: 20. 1904. (Pursell 2007a)
- =Fissidens laxiretis Thér., Diagn. Esp. Var. Nouv. Mouss. 8: 2. 1910. (Thériot 1910b; Pursell 2007a)
- =Fissidens speluncae Broth., Hedwigia 50: 124. 1910. (Herzog 1910b; Pursell 1997b)
- =Fissidens subbrachyneuron Thér. & P. de la Varde, Rev. Gén. Bot. 29: 292. 1917. (Potier de la Varde 1917; Li et al. 2001)
- =Fissidens ensifolius P. de la Varde, Rev. Bryol. Lichénol. 9: 195. 1937, nom. illeg. (Pursell 2007a)
- =Fissidens bocarangensis P. de la Varde, Rev. Bryol. Lichénol. 11: 166. 1939. (Potier de la Varde 1939; Bruggeman-Nannenga 2017)
- =Fissidens megacistis Pursell, Cryptog. Bryol. Lichénol. 7: 39. 1986. (Pursell 1986; Pursell 2007a)
Fissidens flaccidus Mitt. var. flaccidus
Fissidens flaccidus var. mammillosus Brugg.-Nann., Polish Bot. J. 62(2): 156. 2017. (Bruggeman-Nannenga 2017)
Fissidens flaccidus var. percurrens Wongkuna, Cryptog., Bryol. 33(1): 25. 2012. (Printarakul et al. 2012)
Fissidens fluitans Dixon, Results Norweg. Sci. Exped. Tristan da Cunha 48: 10. 1960. (Dixon 1960)
Fissidens fontanus (Bach. Pyl.) Steud., Nomencl. Bot. 2: 166. 1824. (Steudel 1824; Pursell 2007a)

Basionym: Skitophyllum fontanum Bach. Pyl., J. Bot. Agric. 4(4): 158. 1815. (Bachelot de la Pylaie 1815)

≡Octodiceras fontanum (Bach. Pyl.) Lindb., Öfvers. Kongl. Vetensk.-Akad. Förh. 20: 405. 1863. (Lindberg 1863)
- =Fontinalis juliana Savi ex DC., Fl. Franç. (ed. 3) 5: 236. 1815, nom. illeg. (Candolle 1815; Pursell 2007a) ≡Octodiceras julianum (Savi ex DC.) Brid., Bryol. Univ. 2: 678. 1827, nom. illeg. (Bridel 1827; Pursell 2007a) ≡Conomitrium julianum (Savi ex DC.) Mont., Ann. Sci. Nat., Bot., sér. 2, 8: 246. 1837, nom. illeg. (Montagne 1837; Pursell 2007a) ≡Fissidens julianus (Savi ex DC.) Schimp., Flora 21: 271. 1838, nom. illeg. (Pursell 2007a) ≡Schistophyllum julianum (Savi ex DC.) Lindb., Musci Scand.: 13. 1879, nom. illeg. (Lindberg 1879; Pursell 2007a)
- =Conomitrium mexicanum Müll. Hal., Bot. Zeitung (Berlin) 22: 347. 1864. (Pursell 2007a) ≡Fissidens mexicanus (Müll. Hal.) Mitt., J. Linn. Soc., Bot. 12: 584. 1869. (Mitten 1869; Pursell 2007a) ≡Conomitrium julianum var. mexicanum (Müll. Hal.) Schimp., Mém. Soc. Natl. Sci. Nat. Cherbourg 16: 171. 1872. (Bescherelle 1872) ≡Octodiceras mexicanum (Müll. Hal.) A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1874–75: 134. 1876. (Jaeger 1876; Pursell 2007a) ≡Fissidens julianus var. mexicanus (Müll. Hal.) Thér., Mem. Soc. Cub. Hist. Nat. "Felipe Poey" 13: 210. 1939. (Thériot 1939)
- =Conomitrium tuerckheimii Müll. Hal., Bull. Herb. Boissier 5: 173. 1897. (Müller 1897a; Pursell 2007a) ≡Fissidens tuerckheimii (Müll. Hal.) Broth., Nat. Pflanzenfam. I(3): 361. 1901. (Pursell 2007a) ≡Octodiceras tuerckheimii (Müll. Hal.) Cardot, Musci Mexic. First Cent.: [1]. 1909. (Pringle [1909]; Pursell 2007a)
- =Fissidens julianus var. americanus Kindb., Rev. Bryol. 36: 42. 1909. (Crum & Anderson 1981)
- =Octodiceras julianum var. ohioense Emig, Bryologist 21: 60. 1918. (Pursell 1987)
Fissidens formosanus Nog., J. Hattori Bot. Lab. 7: 63. 1952. (Noguchi 1952b; Iwatsuki & Suzuki 1982)
Fissidens fujiensis Tad. Suzuki & Z. Iwats., J. Hattori Bot. Lab. 92: 169. 2002. (Iwatsuki & Suzuki 2002; Suzuki 2016)
Fissidens fuscoviridis Thwaites & Mitt., J. Linn. Soc., Bot. 13: 323. 1873. (Mitten 1873b; Noguchi 1973)
Fissidens ganguleei Nork., Mosses E. India 2: 527. 1971. (Gangulee 1971; Iwatsuki & Suzuki 1982)

Replaced synonym: Fissidens lancifolius Hampe ex Gangulee, Bull. Bot. Soc. Bengal 11: 75. 1957[1959], nom. illeg. (Gangulee 1957)
Fissidens gardneri Mitt., J. Linn. Soc., Bot. 12: 593. 1869. (Mitten 1869; Pursell 2007a)
- =Fissidens microcladus Thwaites & Mitt., J. Linn. Soc., Bot. 13: 324. 1873. (Mitten 1873b; Seppelt & Stone 2016)
- =Fissidens fouta-djalloni Paris, Rev. Bryol. 35: 63. 1908. (Cardot 1908; Pursell 2007a)
- =Fissidentella perpusilla Cardot, Rev. Bryol. 36: 17. 1909. (Cardot 1909a; Bruggeman-Nannenga 1997)
- =Moenkemeyera etessei Broth. & Paris, Rev. Bryol. 38: 26. 1911. (Paris 1911; Pursell 2007a)
- =Fissidens theriotii Corb., Bull. Mus. Natl. Hist. Nat. 18: 109. 1912. (Pursell 2007a)
- =Fissidens rotundatus Dixon, S. African J. Sci. 18: 332. 1922. (Sim & Dixon 1922; Bruggeman-Nannenga 1997)
- =Fissidens subspathulatus Dixon, Farlowia 1: 25. 1943. (Dixon 1943; Pursell 2007a)
Fissidens gaultieri Paris & Broth., Rev. Bryol. 29: 94. 1902. (Paris 1902; Tan & Iwatsuki 1993)
Fissidens gedehensis M. Fleisch., Hedwigia 38(Beibl. 3): 127. 1899. (Fleischer 1899; Bruggeman-Nannenga 2009a)
Fissidens gedehensis M. Fleisch. var. gedehensis
Fissidens gedehensis var. lawuensis Baumgartner & J. Froehl., Arch. Hydrobiol. 21: 302. 1955. (Froehlich 1955)
Fissidens geijskesii Florsch., Fl. Suriname 6(1): 30. 1964. (Florschütz 1964; Pursell 2007a)
Fissidens geminiflorus Dozy & Molk., Pl. Jungh.: 316. 1854. (Dozy & Molkenboer 1854b; Eddy 1988)
- =Fissidens nagasakinus Besch., J. Bot. (Morot) 12: 292. 1898. (Eddy 1988) ≡Fissidens geminiflorus var. nagasakinus (Besch.) Z. Iwats., J. Hattori Bot. Lab. 32: 272. 1969. (Iwatsuki 1969)
- =Fissidens nagasakinus f. minor Besch., J. Bot. (Morot) 12: 293. 1898. (Bescherelle 1898b)
- =Fissidens irroratus Cardot, Beih. Bot. Centralbl., Abt. 2, 19(2): 99. 1905. (Li et al. 2001)
- =Fissidens okamurae Broth., Bot. Mag. (Tokyo) 28: 36. 1914. (Noguchi & Iwatsuki 1987)
- =Fissidens nagasakinus var. luzonensis Broth., Philipp. J. Sci., C. 13: 204. 1918. (Brotherus 1918b; Iwatsuki & Suzuki 1996)
- =Fissidens nagasakinus var. elatus Broth. ex Ihsiba, Cat. Mosses Japan: 18. 1929. (Ihsiba 1929; Suzuki 2016)
- =Fissidens takakii Sakurai, Bot. Mag. (Tokyo) 49: 138. 1935. (Noguchi & Iwatsuki 1987)
- =Fissidens crenulatifolius Dixon & Sakurai, Bryologist 39: 3. 1936. (Noguchi & Iwatsuki 1987)
- =Fissidens mollicaulis Sakurai, Bryologist 39: 5. 1936. (Noguchi & Iwatsuki 1987)
- =Fissidens pachyaristatus Sakurai, Bryologist 39: 6. 1936. (Iwatsuki 1991)
- =Fissidens hattorii Sakurai, Bot. Mag. (Tokyo) 56: 217. 1942. (Noguchi & Iwatsuki 1987)
- =Fissidens magofukui Sakurai, Bot. Mag. (Tokyo) 64: 196. 1951. (Noguchi & Iwatsuki 1987)
Fissidens georgianus Irmsch., Notizbl. Bot. Gart. Berlin-Dahlem 7: 536. 1921. (Irmscher 1921; Yano & Mell 2016)
Fissidens geppii M. Fleisch., Musci Buitenzorg 1: 26. 1904. (Fleischer 1904; Iwatsuki & Suzuki 1982)
- =Fissidens hasskarlii var. irrigatus M. Fleisch., Hedwigia 38(Beibl. 3): 128. 1899. (Bruggeman-Nannenga 1988) ≡Fissidens schmidii var. irrigatus (M. Fleisch.) M. Fleisch., Musci Buitenzorg 1: 26. 1904.
- =Fissidens pseudolateralis Cardot, Bull. Herb. Boissier, sér. 2, 8: 332. 1908. (Noguchi & Iwatsuki 1987)
- =Fissidens hondai Sakurai, Bot. Mag. (Tokyo) 47: 739. 1933. (Noguchi & Iwatsuki 1987)
- =Fissidens neorivularis Sakurai, Bot. Mag. (Tokyo) 47: 739. 1933. (Noguchi & Iwatsuki 1987)
- =Fissidens higoensis Sakurai, Bryologist 39: 8. 1936. (Noguchi & Iwatsuki 1987)
- =Fissidens rigidiusculus Broth. ex Gangulee, Mosses E. India 2: 484. 1971, nom. illeg. (Gangulee 1971; Bruggeman-Nannenga 1988)
Fissidens ghatensis K.M. Manjula, Manju & K.P. Rajesh, Fissidentac. W. Ghats India: 417. 2022. (Manjula et al. 2022)
Fissidens giraldii Broth., Nat. Pflanzenfam. I(3): 362. 1901, nom. dub. (Brotherus 1901b; Pursell 1987)

Replaced synonym: Conomitrium tenerrimum Müll. Hal., Nuovo Giorn. Bot. Ital., n.s. 3: 90. 1896. (Müller 1896b; Wijk et al. 1959)
Fissidens gladiolus Mitt., Trans. Linn. Soc. London 23: 55. 1860. (Mitten 1860; Bruggeman-Nannenga 2013c)

≡Nanobryum gladiolum (Mitt.) Bizot, Rev. Bryol. Lichénol. 38: 593. 1971[1973]. (Bizot 1971-72)
- =Nanobryum dummeri Dixon, J. Bot. 60: 101. 1922. (Dixon 1922; Bruggeman-Nannenga 2013c)
- =Anisothecium pallidisetum P. de la Varde, Bull. Soc. Bot. France 73: 380. 1926. (Potier de la Varde 1926a; Pursell & Reese 1980)
Fissidens glaucissimus Welw. & Duby, Mém. Soc. Phys. Genève 21: 223. 1872. (Duby 1872; Bruggeman-Nannenga 2006b)
- =Fissidens glaucissimus var. minor Welw. & Duby, Mém. Soc. Phys. Genève 21: 224. 1872. (Duby 1872; Bruggeman-Nannenga 2024)
- =Fissidens subglaucissimus Broth., Bol. Soc. Brot. 8: 175. 1890. (Brotherus 1890; Kis 1985)
- =Fissidens microphoenix P. de la Varde, Bull. Soc. Bot. France 74: 142. 1927. (Potier de la Varde 1927; Kis 1985) ≡Fissidens subglaucissimus var. microphoenix (P. de la Varde) P. de la Varde, Mém. Soc. Sci. Nat. Math. Cherbourg 42: 27. 1936. (Potier de la Varde 1936)
- =Fissidens thallangae Dixon, J. Bot. 76: 220. 1938. (Dixon 1938a; O'Shea 2006)
Fissidens gomae P. de la Varde & V. Leroy bis, Bull. Jard. Bot. État Bruxelles 18: 156. 1947. (Leroy 1947; Bruggeman-Nannenga 2013c)
Fissidens goyazensis Broth., Hedwigia 34: 120. 1895. (Brotherus 1895b; Pursell 2007a)
- =Fissidens veracruzensis Pursell, Bryologist 69: 493. 1966[1967]. (Pursell 1966; Pursell 2007a)
Fissidens gracilifolius Brugg.-Nann. & Nyholm, Ill. Fl. Nord. Mosses 1: 10. 1986. (Nyholm 1986; Hodgetts et al. 2020)

Replaced synonym: Fissidens incurvus var. tenuifolius Boulay, Musc. France, Mousses: 528. 1884. (Boulay 1884)

≡Fissidens minutulus subsp. tenuifolius (Boulay) Lambinon, Lejeunia, n.s. 45: 6. 1968[1969]. (Lambinon 1968)
Fissidens grainvillei P. de la Varde, Recueil Publ. Soc. Havraise Études Diverses 99(1): 133. 1932. (Thériot 1932; O'Shea 2006)
Fissidens grandifolius Broth. & P. de la Varde, Bull. Soc. Bot. France 73: 57. 1926. (Potier de la Varde 1926b; Bruggeman-Nannenga 2017)
Fissidens grandifolius D. Subram., Pl. Arch. 16(2): 541. 2016, nom. illeg. (Subramanian 2016)
Fissidens grandifrons Brid., Muscol. Recent. Suppl. 1: 170. 1806. (Bridel 1806–1817; Pursell 2007a)

≡Pachyfissidens grandifrons (Brid.) Limpr., Laubm. Deutschl. 1: 455. 1887. (Limpricht 1885–1903)
- =Dicranum adianthoides var. atrovirens DC., Fl. Franç. (ed. 3) 2: 480. 1805. (Lamarck & Candolle 1805; Wijk et al. 1969)
- =Skitophyllum congestum Bach. Pyl., J. Bot. Agric. 4: 164. 1815, nom. illeg.
- =Fissidens insignis Müll. Hal., Bot. Zeitung (Berlin) 22: 339. 1864. (Müller 1864; Pursell 2007a)
- =Fissidens subgrandifrons Müll. Hal., Bot. Zeitung (Berlin) 22: 339. 1864. (Müller 1864; Pursell 2007a)
- =Fissidens grandifrons var. strictus Besch., Mém. Soc. Natl. Sci. Nat. Cherbourg 16: 171. 1872. (Bescherelle 1872; Pursell 1994b)
- =Fissidens yunnanensis Besch., Rev. Bryol. 18: 88. 1891. (Bescherelle 1891d; Pursell 2007a)
- =Fissidens planicaulis Besch., Ann. Sci. Nat., Bot., sér. 7, 17: 335. 1893. (Pursell 2007a) ≡Fissidens grandifrons var. planicaulis (Besch.) Nog., J. Hattori Bot. Lab. 7: 68. 1952. (Noguchi 1952b)
- =Fissidens diversiretis Broth., Symb. Sin. 4: 11. 1929. (Brotherus 1929; Bruggeman-Nannenga et al. 1994)
Fissidens grandifrons var. flaccidus Brid., Bryol. Univ. 2: 701. 1827, nom. dub. (Bridel 1827; Bruggeman-Nannenga & Arts 2010)
Fissidens grandifrons Brid. var. grandifrons
Fissidens granulatus (Geh. & Hampe) Paris, Actes Soc. Linn. Bordeaux 49(3): 147. 1895. (Paris 1895; Yano 2011)

Basionym: Conomitrium granulatum Geh. & Hampe, Vidensk. Meddel. Dansk Naturhist. Foren. Kjøbenhavn ser. 4, 1–2: 161. 1879. (Hampe 1879)
Fissidens granulidens Brugg.-Nann., Cryptog., Bryol. 43(2): 20. 2022. (Bruggeman-Nannenga 2022a; Bruggeman-Nannenga 2022b)
Fissidens griffithii Gangulee, Nova Hedwigia 8: 143. 1964. (Gangulee 1964; Gangulee 1971)
Fissidens grossiretis Müll. Hal., Linnaea 39: 356. 1875. (Müller 1875; O'Shea 2006)
Fissidens guangdongensis Z. Iwats. & Z.H. Li, Acta Bot. Fenn. 129: 35. 1985. (Li 1985; Bruggeman-Nannenga & Müller 2020)
Fissidens guianensis Mont., Ann. Sci. Nat., Bot., sér. 2, 14: 340. 1840. (Montagne 1840; Pursell 2007a)
- =Fissidens stipitatus Ångstr., Öfvers. Kongl. Vetensk.-Akad. Förh. 33(4): 47. 1876. (Ångström 1876; Pursell 2007a)
Fissidens guianensis Mont. var. guianensis
Fissidens guianensis var. pacaas-novosensis Pursell & W.D. Reese, J. Hattori Bot. Lab. 55: 245. 1984. (Pursell 1984; Pursell 2007a)
Fissidens gymnandrus Buse, Hedwigia 8: 55. 1869. (Milde 1869b; Hodgetts et al. 2020)

≡Fissidens bryoides var. gymnandrus (Buse) R. Ruthe, Hedwigia 9: 178. 1870.
- =Fissidens bryoides var. intermedius R. Ruthe, Bryoth. Eur. 24: no. 1160. 1872. (Bruggeman-Nannenga 1982)
- =Fissidens bryoides var. hedwigii Limpr., Laubm. Deutschl. 1: 429. 1887. (Limpricht 1885–1903; Bruggeman-Nannenga 1982) ≡Fissidens hedwigii (Limpr.) Péterfi, Magyar Bot. Lapok 1: 88. 1902, nom. illeg. (Péterfi 1902)
Fissidens gymnocarpus I.G. Stone, J. Bryol. 12: 553. 1983. (Stone 1983b; Stone 1990c)
Fissidens gymnogynus Besch., J. Bot. (Morot) 12: 292. 1898. (Bescherelle 1898b; Iwatsuki & Suzuki 1982)
- =Fissidens tokubuchii Broth., Hedwigia 38: 209. 1899. (Brotherus 1899a; Noguchi & Iwatsuki 1987)
- =Fissidens rubritheca Sakurai, Bryologist 39: 4. 1936. (Noguchi & Iwatsuki 1987)
- =Fissidens iwasakii Sakurai, Bot. Mag. (Tokyo) 53: 59. 1939. (Noguchi & Iwatsuki 1987)
Fissidens gymnostomus Brugg.-Nann., Lindbergia 15: 140. 1989[1990]. (Bruggeman-Nannenga 1989; Pursell 2007a)
Fissidens haconicus Müll. Hal., Gen. Musc. Frond.: 68. 1900. (Müller 1901)
Fissidens hadii Banu-Fattah, Bangladesh J. Bot. 24: 201. 1995. (Banu-Fattah 1995; Siddiqui 2007)
Fissidens hallianus (Sull. & Lesq.) Mitt., J. Linn. Soc., Bot. 21(138): 560. 1885. (Mitten 1886b; Pursell 1987)

Basionym: Conomitrium hallianum Sull. & Lesq., Musci Appalach.: 108. 1870. (Austin 1870)

≡Octodiceras hallianum (Sull. & Lesq.) A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1874–75: 136. 1876. (Jaeger 1876)
- =Fissidens manateensis Grout, Musci Acrocarpi Bor.-Amer. 24: 590. 1926. (Holzinger 1926; Pursell 1987)
Fissidens harringtonii Brugg.-Nann., Trop. Bryol. 26: 13. 2005. (Bruggeman-Nannenga 2005; O'Shea 2006)
Fissidens henryae I.G. Stone, J. Bryol. 13: 159. 1984. (Stone 1984; Stone 1990c)
- =Moenkemeyera australiensis Dixon, Proc. Roy. Soc. Queensland 53: 25. 1941, nom. dub. (Dixon 1942b; Stone 1990c)
Fissidens hildebrandtii Müll. Hal., Linnaea 40: 291. 1876. (Müller 1876; O'Shea 2006)
Fissidens hirsutus Bizot, Rev. Bryol. Lichénol. 40(2): 132. 1974. (Bizot 1974; O'Shea 2006)
Fissidens hoei Pursell, Bryologist 80: 344. 1977. (Pursell 1977; Staples et al. 2004)
Fissidens holleanus Dozy & Molk., Bryol. Jav. 1: 4. 1855. (Dozy & Molkenboer 1861; Bruggeman-Nannenga et al. 2015)
- =Fissidens scabrisetus Mitt., J. Linn. Soc., Bot. 10: 184. 1868. (Mitten 1868; Iwatsuki & Suzuki 1996)
- =Fissidens multiflorus Thwaites & Mitt., J. Linn. Soc., Bot. 13: 325. 1873. (Mitten 1873b; Bruggeman-Nannenga et al. 2015)
- =Fissidens kearnbachii Broth., Bot. Jahrb. Syst. 17: 476. 1893. (Brotherus 1893a; Norris & Koponen 1987)
- =Fissidens subscabrisetus Broth. & Watts, J. & Proc. Roy. Soc. New South Wales 49: 128. 1915. (Brotherus & Watts 1915a; Iwatsuki & Suzuki 1995)
- =Fissidens subfirmus Dixon, J. Indian Bot. 2: 178. 1921. (Dixon 1921; Schwarz 2013)
- =Fissidens japonicopunctatus Shin, Sci. Rep. Kagoshima Univ. 13: 86. 1964. (Shin 1964; Li et al. 2001)
Fissidens holleanus var. asperisetus (Sande Lac.) M. Fleisch., Musci Buitenzorg 1: 34. 1904. (Fleischer 1904; Suzuki & Iwatsuki 2011)

Basionym: Fissidens asperisetus Sande Lac., Sp. Nov. Musc. Ind.: 2. 1872. (Sande Lacoste 1872; Suzuki & Iwatsuki 2011)
- =Fissidens asperisetus var. andamanensis Gangulee, Mosses E. India 2: 507. 1971. (Gangulee 1971; Schwarz 2014)
Fissidens holleanus Dozy & Molk. var. holleanus
Fissidens horizonticarpus Müll. Hal., Flora 69: 504. 1886. (Müller 1886; O'Shea 2006)
Fissidens hornschuchii Mont., Ann. Sci. Nat., Bot., sér. 2, 14: 342. 1840. (Montagne 1840; Pursell 2007a)

≡Conomitrium hornschuchii (Mont.) Hampe, Vidensk. Meddel. Dansk Naturhist. Foren. Kjøbenhavn ser. 4, 1–2: 160. 1879. ≡Fissidens prionodes f. hornschuchii (Mont.) Florsch., Fl. Suriname 6(1): 62. 1964. (Florschütz 1964)
- =Conomitrium glaziovii Hampe, Vidensk. Meddel. Dansk Naturhist. Foren. Kjøbenhavn ser. 3, 6: 176. 1875. (Pursell 2007a) ≡Fissidens glaziovii (Hampe) Paris, Index Bryol.: 470. 1896. (Pursell 2007a)
- =Fissidens longipedicellatus Müll. Hal. ex Broth., Contr. Fl. Bryol. Brésil: 10. 1891. (Brotherus 1891; Pursell 2007a)
- =Conomitrium polycarpum Besch., J. Bot. (Morot) 5: 252. 1891. (Pursell 2007a) ≡Fissidens polycarpus (Besch.) Broth., Nat. Pflanzenfam. I(3): 357. 1901, nom. illeg. (Pursell 2007a) ≡Fissidens guarani W.R. Buck, Candollea 40: 202. 1985. (Buck 1985; Pursell 2007a)
- =Fissidens evanescens Broth., Hedwigia 34: 120. 1895. (Brotherus 1895b; Pursell 2007a)
- =Fissidens constrictus Müll. Hal., Bull. Herb. Boissier 6: 23. 1898. (Müller 1898a; Pursell 2007a)
- =Fissidens saltograndensis Broth., Ergebn. Bot. Exp. Südbras., Musci: 274. 1924. (Pursell 2007a)
- =Fissidens legalloi H.A. Crum, Bryologist 63: 97. 1960. (Crum 1960; Pursell 2007a)
Fissidens hyalinus Wilson & Hook., J. Bot. (Hooker) 3: 89. 1841[1840]. (Wilson & Hooker 1841; Pursell 2007a)

≡Conomitrium hyalinum (Wilson & Hook.) Müll. Hal., Syn. Musc. Frond. 2: 525. 1851. (Müller 1851) ≡Schistophyllum hyalinum (Wilson & Hook.) Lindb., Utkast Eur. Bladmoss.: 17. 1878, nom. illeg. (Lindberg 1878)
- =Fissidens nymanii M. Fleisch., Musci Buitenzorg 1: 19. 1904. (Pursell 2007a)
- =Fissidens satsumensis Sakurai, Bot. Mag. (Tokyo) 47: 735. 1933. (Noguchi & Iwatsuki 1987)
Fissidens hydropogon Spruce ex Mitt., J. Linn. Soc., Bot. 12: 585. 1869. (Mitten 1869; Pursell 2007a)

≡Octodiceras hydropogon (Spruce ex Mitt.) A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1874–75: 135. 1876. (Jaeger 1876) ≡Conomitrium hydropogon (Spruce ex Mitt.) Kindb., Enum. Bryin. Exot.: 52. 1888.
Fissidens hylogenes Dixon, New Zealand Inst. Bull. 3(6): 364. 1929. (Dixon 1929; Beever 2014)
Fissidens hylophilus Irmsch., Notizbl. Bot. Gart. Berlin-Dahlem 7: 533. 1921. (Irmscher 1921; Yano 1996)
Fissidens hymenodon Besch., Ann. Sci. Nat., Bot., sér. 7, 2: 85. 1885. (Bescherelle 1885; O'Shea 2006)
Fissidens imbricatus E. Britton & E.B. Bartram, J. Washington Acad. Sci. 26: 7. 1936. (Bartram 1936; Pursell 2007a)
Fissidens inaequalilimbatus Paris & Broth., Rev. Bryol. 31: 118. 1904. (Paris 1904a; Bizot et al. 1986–1987)
Fissidens inaequalis Mitt., J. Linn. Soc., Bot. 12: 589. 1869. (Mitten 1869; Pursell 2007a)

≡Conomitrium inaequale (Mitt.) A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1874–75: 124. 1876. (Jaeger 1876)
- =Fissidens occultus Broth., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 21, Afd. 3(3): 14. 1895. (Brotherus 1895a; Pursell 2007a)
- =Conomitrium latiusculum Müll. Hal., Flora 83: 328. 1897. (Müller 1897d; Pursell 2007a) ≡Fissidens latiusculus (Müll. Hal.) Paris, Index Bryol. Suppl.: 160. 1900. (Pursell 2007a)
- =Conomitrium elachistophyllum Müll. Hal., Hedwigia 39: 242. 1900. (Pursell 2007a) ≡Fissidens elachistophyllus (Müll. Hal.) Broth., Nat. Pflanzenfam. I(3): 357. 1901. (Pursell 2007a)
- =Conomitrium perpygmaeum Müll. Hal., Hedwigia 39: 243. 1900. (Pursell 2007a) ≡Fissidens perpygmaeus (Müll. Hal.) Broth., Nat. Pflanzenfam. I(3): 357. 1901. (Pursell 2007a)
- =Fissidens macroblastus R.S. Williams, Bull. New York Bot. Gard. 3(9): 113. 1903. (Williams 1903; Pursell 2007a)
- =Fissidens perminutus Broth., Hedwigia 45: 267. 1906. (Brotherus 1906a; Pursell 2007a)
- =Fissidens pauperculus var. surinamensis Florsch., Fl. Suriname 6(1): 39. 1964. (Florschütz 1964; Pursell 1994c)
Fissidens inaequiretis I.G. Stone, J. Bryol. 15: 738. 1989. (Stone 1989)
Fissidens incertus Thér. & P. de la Varde, Rev. Gén. Bot. 29: 293. 1917. (Potier de la Varde 1917; Tan & Iwatsuki 1993)
Fissidens incisus Herzog, Biblioth. Bot. 87: 25. 1916. (Herzog 1916; Pursell 2007a)
Fissidens inclinis Müll. Hal., Flora 83: 327. 1897. (Müller 1897d; O'Shea 2010)
Fissidens inclusus Bizot & Dury, Rev. Bryol. Lichénol. 40(2): 132. 1974. (Bizot 1974; O'Shea 2006)
Fissidens incognitus Gangulee, Bull. Bot. Soc. Bengal 11: 70. 1957[1959]. (Gangulee 1957; Suzuki & Iwatsuki 2010)
Fissidens inconspicuus Mitt., J. Linn. Soc., Bot. 10: 185. 1868. (Mitten 1868; Miller et al. 1978)
Fissidens incurvus Starke ex Röhl., Deutschl. Fl. (ed. 2), Kryptog. Gew. 3: 76. 1813. (Röhling 1813; Erzberger 2016)

Replaced synonym: Dicranum incurvum F. Weber & D. Mohr, Bot. Taschenb. (Weber): 162. 1807, nom. illeg. (Weber & Mohr 1807)

≡Skitophyllum incurvum (Starke ex Röhl.) Bach. Pyl., J. Bot. Agric. 4: 147. 1815. ≡Fissidens bryoides var. incurvus (Starke ex Röhl.) Huebener, Muscol. Germ.: 219. 1833. (Huebener 1833) ≡Fissidens viridulus var. incurvus (Starke ex Röhl.) Wilson, Bryol. Brit.: 303. 1855. (Wilson 1855; Hodgetts et al. 2020) ≡Schistophyllum incurvum (Starke ex Röhl.) Lindb., Musci Scand.: 13. 1879. (Lindberg 1879) ≡Fissidens viridulus subsp. incurvus (Starke ex Röhl.) Waldh., Skand. Bladmossfl.: 341. 1939. (Jensen 1939) ≡Fissidens bryoides subsp. incurvus (Starke ex Röhl.) Bertsch, Moosfl.: 22. 1949. (Bertsch 1949)
- =Dicranum tamarindifolium Turner, Muscol. Hibern. Spic.: 55. 1804. (Turner 1804a; Corley et al. 1981) ≡Fissidens tamarindifolius (Turner) Brid., Muscol. Recent. Suppl. 1: 165. 1806. (Bridel 1806–1817; Corley et al. 1981) ≡Skitophyllum tamarindifolium (Turner) Bach. Pyl., J. Bot. Agric. 4: 147. 1815. (Corley et al. 1981) ≡Fissidens bryoides var. tamarindifolius (Turner) Griff., Calcutta J. Nat. Hist. 2: 503. 1842. (Griffith 1842) ≡Fissidens incurvus var. tamarindifolius (Turner) Braithw., Brit. Moss Fl. 1: 69. 1881. (Braithwaite 1887-1905) ≡Fissidens incurvus subsp. tamarindifolius (Turner) Kindb., Eur. N. Amer. Bryin. 2: 170. 1897[1898]. (Kindberg 1897) ≡Fissidens inconstans var. tamarindifolius (Turner) P. de la Varde, Rev. Bryol. 41: 89. 1920. ≡Fissidens viridulus var. tamarindifolius (Turner) Grout, Moss Fl. N. Amer. 1: 12. 1936. (Grout 1936-1939) ≡Fissidens bryoides subsp. tamarindifolius (Turner) Podp., Consp. Musc. Eur.: 78. 1954. (Podpěra 1954)
- =Dicranum bryoides var. nutans Gray, Nat. Arr. Brit. Pl. 1: 733. 1821. (Gray 1821)
- =Fissidens viridulus var. angustifolius Lindb., Handb. Skand. Fl. (ed. 9) 2: 73. 1864. (Hartman 1864) ≡Fissidens incurvus var. angustifolius (Lindb.) C. Hartm., Handb. Skand. Fl. (ed. 10) 2: 102. 1871. (Hartman 1871)
- =Fissidens sardous De Not., Atti Reale Univ. Genova 1: 486. 1869. (Wijk et al. 1962)
- =Schistophyllum haraldii Lindb., Bot. Not. 1887: 40. 1887. (Erzberger 2016) ≡Fissidens haraldii (Lindb.) Limpr., Laubm. Deutschl. 3: 670. 1901. (Limpricht 1885–1903; Erzberger 2016) ≡Fissidens viridulus var. haraldii (Lindb.) C.E.O. Jensen, Förteckn. Skand. Växt., Moss. (ed. 2): 18. 1937. (Weimarck 1937) ≡Fissidens bryoides subsp. haraldii (Lindb.) Podp., Consp. Musc. Eur.: 80. 1954. (Podpěra 1954) ≡Fissidens tamarindifolius var. haraldii (Lindb.) Bizot & R.B. Pierrot, Rev. Bryol. Lichénol. 38: 593. 1971[1973]. (Bizot 1971-72)
- =Fissidens nanus Warnst., Schriften Naturf. Ges. Danzig 9(2): 166. 1897. (Corley et al. 1981) ≡Fissidens bryoides var. nanus (Warnst.) Podp., Consp. Musc. Eur.: 78. 1954. (Podpěra 1954)
- =Fissidens incurvus f. minimus Latzel, Beih. Bot. Centralbl., Abt. 2, 48: 465. 1931. (Podpěra 1954)
Fissidens integerrimus Mitt., Fl. Tasman. 2: 168. 1859. (Hooker 1860; Beever 2014)
- =Fissidens tasmanicus Broth. ex Rodway, Pap. & Proc. Roy. Soc. Tasmania 1915: 104. 1915. (Streimann & Klazenga 2002)
- =Fissidens hunteri J.H. Willis, Victorian Naturalist 68: 83. 1951. (Willis 1951; Streimann & Klazenga 2002)
Fissidens intramarginatus (Hampe) A. Jaeger, Enum. Fissident.: 14. 1869. (Jaeger 1869; Bruggeman-Nannenga & Arts 2010)

Basionym: Conomitrium intramarginatum Hampe, Linnaea 31: 531. 1862. (Hampe 1862)
- =Fissidens ferrugineus Müll. Hal., Bot. Zeitung (Berlin) 22: 341. 1864. (Müller 1864; Bruggeman-Nannenga & Arts 2010)
- =Fissidens tenuifolius Mitt., J. Linn. Soc., Bot. 12: 596. 1869. (Mitten 1869; Pursell 2007a)
- =Conomitrium schweinfurthii Müll. Hal., Linnaea 39: 369. 1875. (Müller 1875; Bruggeman-Nannenga 1997) ≡Fissidens schweinfurthii (Müll. Hal.) Paris, Index Bryol.: 484. 1896. (Bruggeman-Nannenga 1997)
- =Conomitrium sanguineonerve Müll. Hal., Linnaea 39: 371. 1875. (Müller 1875; Bruggeman-Nannenga 1993) ≡Fissidens sanguineonervis (Müll. Hal.) Paris, Index Bryol.: 484. 1896. (Bruggeman-Nannenga 1993)
- =Conomitrium perfoliatum Müll. Hal., Linnaea 39: 374. 1875. (Müller 1875; Bruggeman-Nannenga 1997) ≡Fissidens perfoliatus (Müll. Hal.) Paris, Index Bryol.: 480. 1896. (Bruggeman-Nannenga 1997)
- =Conomitrium rubiginosum Hampe, Vidensk. Meddel. Dansk Naturhist. Foren. Kjøbenhavn ser. 3, 6: 176. 1875. (Pursell 2007a) ≡Fissidens rubiginosus (Hampe) Paris, Index Bryol.: 484. 1896. (Pursell 2007a)
- =Fissidens nossianus Besch., Ann. Sci. Nat., Bot., sér. 6, 9: 333. 1880. (Bescherelle 1879; Bruggeman-Nannenga 1997)
- =Fissidens basicarpus Müll. Hal., Bot. Jahrb. Syst. 5: 88. 1883. (Müller 1883; Bruggeman-Nannenga 1997)
- =Fissidens flavifrons Besch., Rev. Bryol. 18: 50, 54. 1891. (Pursell 2007a)
- =Fissidens acicularis Müll. Hal., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 3(3): 12. 1895. (Brotherus 1895a; Pursell 2007a)
- =Fissidens glaucopteris Müll. Hal. ex Dusén, Kongl. Svenska Vetensk. Acad. Handl., n.s. 28(2): 13. 1895. (Dusén 1895; Bruggeman-Nannenga 1997)
- =Fissidens congolensis Renauld & Cardot, Bull. Soc. Roy. Bot. Belgique 35(1): 306. 1897. (Bruggeman-Nannenga 1997)
- =Fissidens motelayi Renauld & Cardot, Prodr. Fl. Bryol. Madagascar: 117. 1898. (Renauld 1897; Bruggeman-Nannenga 1997)
- =Fissidens hemibryoides Müll. Hal., Hedwigia 39: 238. 1900. (Pursell 2007a)
- =Fissidens camptothecius Besch., Rev. Bryol. 28: 64. 1901. (Pursell 2007a)
- =Fissidens pobeguinii Paris & Broth., Rev. Bryol. 30: 67. 1903. (Bruggeman-Nannenga 1997)
- =Fissidens termitidarum Paris & Broth., Rev. Bryol. 31: 43. 1904. (Bruggeman-Nannenga 1997)
- =Fissidens circinatulus Paris, Rev. Bryol. 35: 1. 1908, nom. illeg. (Bruggeman-Nannenga 1997) ≡Fissidens africanus Paris, Rev. Bryol. 35: 57. 1908, nom. illeg. (Bruggeman-Nannenga 1997) ≡Fissidens centrafricanus Bizot, Rev. Bryol. Lichénol. 40: 131. 1974. (Bizot 1974; Bruggeman-Nannenga 1997)
- =Fissidens foveolatus Cardot, Rev. Bryol. 35: 1. 1908. (Bruggeman-Nannenga 1997)
- =Fissidens durus Paris & Broth., Rev. Bryol. 35: 57. 1908. (Bruggeman-Nannenga 1997)
- =Fissidens casamancae Cardot, Rev. Bryol. 35: 63. 1908. (Cardot 1908; Kis 1985)
- =Fissidens vanderijstii Cardot, Rev. Bryol. 35: 63. 1908. (Cardot 1908; Bruggeman-Nannenga 1997)
- =Fissidens oussouyensis Cardot, Rev. Bryol. 36: 17. 1909. (Cardot 1909a; Bruggeman-Nannenga 1997)
- =Fissidens bukobensis Broth., Wiss. Ergebn. Deut. Zentr.-Afr. Exped., Bot.: 143. 1910. (Brotherus 1910b; Kis 1985)
- =Fissidens itarensis Broth., Wiss. Ergebn. Deut. Zentr.-Afr. Exped., Bot.: 143. 1910. (Brotherus 1910b; Bruggeman-Nannenga 1993)
- =Fissidens longelimbatus Broth., Hedwigia 52: 308. 1912. (Bruggeman-Nannenga 1993)
- =Fissidens incacorralis Herzog, Biblioth. Bot. 87: 27. 1916. (Herzog 1916; Pursell 2007a)
- =Fissidens ferrugineus var. pallidus Thér., Recueil Publ. Soc. Havraise Études Diverses 90: 81. 1923. (Thériot 1923) ≡Fissidens decaryi Bizot, Rev. Bryol. Lichénol. 40: 131. 1974. (Bizot 1974; Bruggeman-Nannenga & Arts 2010)
- =Fissidens pabstii var. latifolius Broth., Ergebn. Bot. Exp. Südbras., Musci: 274. 1924. (Pursell 1994c)
- =Fissidens gabonensis Broth. & P. de la Varde, Bull. Soc. Bot. France 72: 703. 1925. (Bruggeman-Nannenga 1997)
- =Fissidens subdurus Broth. & P. de la Varde, Bull. Soc. Bot. France 73: 377. 1926. (Potier de la Varde 1926a; Bruggeman-Nannenga 1997)
- =Fissidens perlimbatus Broth. & P. de la Varde, Arch. Bot. Bull. Mens. 3: 3. 1929. (Potier de la Varde 1929b; Bruggeman-Nannenga 1997)
- =Fissidens longevittatus P. de la Varde, Ann. Cryptog. Exot. 3: 43. 1930. (Potier de la Varde 1930; Bruggeman-Nannenga 1997)
- =Fissidens ugandae Dixon & P. de la Varde, Ann. Cryptog. Exot. 3: 45. 1930. (Potier de la Varde 1930; Bruggeman-Nannenga 1993)
- =Fissidens hancockianus Steere, Allan Hancock Pacific Exped. 3(1): 2. 1936. (Steere 1936; Pursell 2007a)
- =Fissidens willisiae E.B. Bartram, Bryologist 42: 152. 1939. (Willis 1939; Pursell 2007a)
- =Fissidens ambiguus Bizot, Rev. Bryol. Lichénol. 40(2): 130. 1974. (Bruggeman-Nannenga 1993)
- =Fissidens gibbonii Bizot, Rev. Bryol. Lichénol. 40(2): 131. 1974. (Bruggeman-Nannenga 1993)
- =Fissidens spinosolimbatus Bizot & Dury, Rev. Bryol. Lichénol. 40(2): 135. 1974. (Bruggeman-Nannenga 1993)
- =Fissidens subcongolensis Bizot & Dury, Rev. Bryol. Lichénol. 40(2): 136. 1974. (Bruggeman-Nannenga 1993)
- =Fissidens zenkeri Broth. ex Bizot, Rev. Bryol. Lichénol. 40: 136. 1974. (Bizot 1974; Bruggeman-Nannenga 1997)
- =Fissidens deslooveri Bizot, Rev. Bryol. Lichénol. 42: 844. 1976. (Bizot 1976; Bruggeman-Nannenga 1993)
- =Fissidens ake-assii Bizot & Dury, Rev. Bryol. Lichénol. 42: 853. 1976. (Bizot 1976; Bruggeman-Nannenga 1997)
- =Fissidens submadecassus Bizot, Cryptog. Bryol. Lichénol. 1: 423. 1980. (Bizot 1980; Bruggeman-Nannenga 1997)
Fissidens intromarginatulus E.B. Bartram, Rev. Bryol. Lichénol. 23: 242. 1954. (Bartram 1954b; Seppelt & Stone 2016)
- =Fissidens intromarginatulus var. kalimpongensis Gangulee, Bull. Bot. Soc. Bengal 11: 73. 1957[1959]. (Gangulee 1957; Gangulee 1971)
Fissidens involutus Wilson ex Mitt., J. Proc. Linn. Soc., Bot., Suppl. 1(2): 138. 1859. (Mitten 1859; Iwatsuki & Suzuki 1999)
- =Fissidens plagiochiloides Besch., J. Bot. (Morot) 12: 293. 1898. (Li et al. 2001)
- =Fissidens pulogensis Broth., Philipp. J. Sci., C. 5: 141. 1910. (Brotherus 1910a; Li et al. 2001)
- =Fissidens irrigatus Broth., Sitzungsber. Akad. Wiss. Wien, Math.-Naturwiss. Kl., Abt. 1, 133: 275. 1924. (Li et al. 2001)
- =Fissidens subinteger Broth., Symb. Sin. 4: 10. 1929. (Brotherus 1929; Li et al. 2001)
- =Fissidens deciduifolius Sakurai, Bot. Mag. (Tokyo) 47: 742. 1933. (Li et al. 2001)
- =Fissidens recurvicaulis Sakurai, Bryologist 39: 3. 1936. (Li et al. 2001)
- =Fissidens japonicoides Sakurai, Bryologist 39: 4. 1936. (Li et al. 2001)
- =Fissidens tutigae Sakurai, Bot. Mag. (Tokyo) 56: 217. 1942. (Li et al. 2001)
Fissidens involutus Wilson ex Mitt. var. involutus
Fissidens involutus var. jejuensis Y.J. Yoon, B.C. Tan & B.Y. Sun, Arctoa 24: 38. 2015. (Yoon et al. 2015; Kim et al. 2020)
Fissidens iwatsukii Brugg.-Nann., Hikobia 11: 361. 1994. (Bruggeman-Nannenga 1994)
Fissidens jaiorum H. Whittier & H.A. Mill., Bryologist 70: 78. 1967. (Whittier & Miller 1967; Pursell & Allen 1994)
Fissidens jansenii Sérgio & Pursell, Bryologist 104: 378. 2001. (Sérgio & Pursell 2001; Hugonnot & Chavoutier 2020)
Fissidens javanicus Dozy & Molk., Bryol. Jav. 1: 11. 1855. (Dozy & Molkenboer 1861; Eddy 1988)
- =Fissidens acutifolius Mitt., J. Proc. Linn. Soc., Bot., Suppl. 1(2): 137. 1859. (Mitten 1859; Eddy 1988)
- =Fissidens gozadakensis Horik., Bot. Mag. (Tokyo) 49: 53. 1935. (Noguchi & Iwatsuki 1987)
- =Fissidens newcomeri E.B. Bartram, Rev. Bryol. Lichénol. 23: 243. 1954. (Bartram 1954b; Eddy 1988)
Fissidens jeffreyi Bizot, Rev. Bryol. Lichénol. 40(2): 132. 1974. (Bizot 1974; Bruggeman-Nannenga 1999)
Fissidens jonesii Bizot, Rev. Bryol. Lichénol. 40(2): 133. 1974. (Bizot 1974; Bruggeman-Nannenga 2022b)
Fissidens jungermannioides Griff., Calcutta J. Nat. Hist. 2: 504. 1842. (Griffith 1842; Tang et al. 2020)
Fissidens jungermanniopsis Müll. Hal., Linnaea 42: 247. 1879. (Müller 1879b; Matteri 2003)
Fissidens juruensis Broth., Hedwigia 45: 264. 1906. (Brotherus 1906a; Pursell 2007a)
- =Fissidens brittonii Grout, N. Amer. Fl. 15: 169. 1943. (Grout 1943; Pursell 2007a)
- =Fissidens brittonii var. percurrens Grout, N. Amer. Fl. 15: 169. 1943. (Grout 1943; Pursell 2007a) ≡Fissidens juruensis var. percurrens (Grout) Pursell, Mem. New York Bot. Gard. 69: 78. 1994. (Sharp et al. 1994)
Fissidens kalimpongensis Gangulee, Bull. Bot. Soc. Bengal 11: 71. 1957[1959]. (Gangulee 1957; Suzuki & Iwatsuki 2010)
Fissidens kamiyamae Tad. Suzuki & Z. Iwats., Hattoria 4: 58. 2013. (Suzuki & Iwatsuki 2013b)
Fissidens kammadensis Manju, K.P. Rajesh & Madhus., Acta Bot. Hung. 50: 160. 2008. (Manju et al. 2008)
Fissidens karataviensis Samsel, Byull. Moskovsk. Obshch. Isp. Prir. Otd. Biol. 58: 79. 1953. (Samsel 1953; Ignatov et al. 2006)
Fissidens karwarensis Dixon, J. Indian Bot. 2: 179. 1921. (Dixon 1921; O'Shea 2002)
Fissidens kiguchii Tad. Suzuki, Hattoria 6: 10. 2015. (Suzuki 2015; Suzuki 2016)
Fissidens kilaueae Hoe & H.A. Crum, Bryologist 74: 484. 1971[1972]. (Hoe & Crum 1971; Staples et al. 2004)
Fissidens kinabaluensis Z. Iwats., J. Hattori Bot. Lab. 32: 269. 1969. (Iwatsuki 1969; Tang et al. 2020)
Fissidens kondoi Sakurai, Bot. Mag. (Tokyo) 57: 250. 1943. (Sakurai 1943; Miller et al. 1978)
Fissidens kosaninii Latzel, Beih. Bot. Centralbl., Abt. 2, 48(2): 467. 1931. (Latzel 1931; Erzberger 2016)
- =Fissidens valiae P. de la Varde, Rev. Bryol. Lichénol. 15: 36. 1946. (Corley 1980)
Fissidens kurzii Müll. Hal., Linnaea 37: 163. 1873[1872]. (Müller 1872b; Suzuki & Iwatsuki 2010)
Fissidens lachmannii Bizot, Rev. Bryol. Lichénol. 40: 134. 1974. (Bizot 1974; Hodgetts et al. 2016)
Fissidens lagenarius Mitt., J. Linn. Soc., Bot. 10: 184. 1868. (Mitten 1868; Pursell 2007a)
- =Moenkemeyera wainionis Müll. Hal. ex Broth., Contr. Fl. Bryol. Brésil: 11. 1891 (‘wainionis’). (Brotherus 1891; Pursell 2007a) ≡Fissidens diplodus var. wainionis (Müll. Hal. ex Broth.) Pursell, Mem. New York Bot. Gard. 69: 67. 1994. (Sharp et al. 1994)
- =Moenkemeyera alomifolia Müll. Hal., Hedwigia 39: 236. 1900. (Pursell 1994c)
- =Moenkemeyera minutifolia Müll. Hal., Hedwigia 39: 237. 1900. (Pursell 2007a) ≡Fissidens afissidens Brugg.-Nann., Syst. Stud. Fissidens: 158. 1988. (Bruggeman-Nannenga 1988; Pursell 2007a)
- =Moenkemeyera uleana Müll. Hal., Hedwigia 39: 237. 1900. (Pursell 2007a)
- =Moenkemeyera wainionis var. leuconeura Müll. Hal., Hedwigia 39: 237. 1900, nom. dub. (Pursell 2007a)
- =Moenkemeyera wainionis var. mollis Müll. Hal., Hedwigia 39: 237. 1900. (Pursell 1999b)
- =Moenkemeyera obtusifolia R.S. Williams, Bull. New York Bot. Gard. 3(9): 113. 1903. (Williams 1903; Pursell 2007a) ≡Fissidens geminidens Brugg.-Nann., Syst. Stud. Fissidens: 158. 1988. (Bruggeman-Nannenga 1988; Pursell 2007a)
- =Moenkemeyera rarotongae Dixon, Proc. Roy. Soc. Queensland 53: 25. 1941. (Dixon 1942b; Bruggeman-Nannenga 2009a)
Fissidens lagenarius Mitt. var. lagenarius
Fissidens lagenarius var. muriculatus (Spruce ex Mitt.) Pursell, Bryologist 102: 126. 1999. (Pursell 1999b; Pursell 2007a)

Basionym: Fissidens muriculatus Spruce ex Mitt., J. Linn. Soc., Bot. 12: 593. 1869. (Mitten 1869; Pursell 2007a)
- =Fissidens diplodus Mitt., J. Linn. Soc., Bot. 12: 589. 1869. (Mitten 1869; Pursell 2007a) ≡Conomitrium diplodus (Mitt.) A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1874–75: 128. 1876. (Jaeger 1876; Pursell 2007a)
- =Fissidens corticola Schimp. ex Besch., Ann. Sci. Nat., Bot., sér. 6, 3: 191. 1876. (Pursell 2007a)
- =Moenkemeyera richardsii R.S. Williams, Bull. Misc. Inform. Kew 1934: 319. 1934. (Pursell 2007a) ≡Fissidens muriculatus var. richardsii (R.S. Williams) Florsch., Fl. Suriname 6(1): 51. 1964. (Florschütz 1964) ≡Fissidens diplodus var. richardsii (R.S. Williams) Pursell, Bryologist 83: 256. 1980. (Pursell 1980)
Fissidens lancifolius E.B. Bartram, Occas. Pap. Bernice Pauahi Bishop Mus. 15: 94. 1939. (Bartram 1939a; Staples et al. 2004)
Fissidens laosianus Dixon, Ann. Bryol. 9: 62. 1937. (Dixon 1937a; Tan & Iwatsuki 1993)
Fissidens latelimbatus Brugg.-Nann., Lindbergia 2024(e25309): 11. 2024. (Bruggeman-Nannenga 2024)
Fissidens lateriticus K.M. Manjula, Manju & K.P. Rajesh, Fissidentac. W. Ghats India: 413. 2022. (Manjula et al. 2022)
Fissidens lautokensis Dixon, Proc. Linn. Soc. New South Wales 55: 270. 1930. (Dixon & Greenwood 1930; Iwatsuki & Suzuki 1996)
- =Fissidens insularis Thér., Bull. Acad. Int. Géogr. Bot. 20: 98. 1910. (Thériot 1910a; Iwatsuki & Suzuki 1996)
- =Fissidens clarkii E.B. Bartram, Occas. Pap. Bernice Pauahi Bishop Mus. 15(27): 324. 1940. (Bartram 1940; Iwatsuki & Suzuki 1996)
Fissidens laxetexturatus Brugg.-Nann., Nova Hedwigia 45: 114. 1987. (Bruggeman-Nannenga 1987; Kürschner 2003)
Fissidens laxitextus Broth. ex Gangulee, Nova Hedwigia 8: 144. 1964. (Gangulee 1964; Tang et al. 2020)
Fissidens lepidopiloides Müll. Hal., Linnaea 39: 353. 1875. (Müller 1875; O'Shea 2006)
Fissidens leptocheilos Müll. Hal., Linnaea 40: 290. 1876. (Müller 1876; O'Shea 2006)
Fissidens leptocladus Müll. Hal. ex Rodway, Pap. & Proc. Roy. Soc. Tasmania 1912: 136. 1913. (Rodway 1913; Beever 2014)

≡Fissidens rigidiusculus var. leptocladus (Müll. Hal. ex Rodway) Broth., Proc. Linn. Soc. New South Wales 41: 578. 1916, nom. illeg. (Brotherus 1916)
- =Fissidens amblyothallioides Broth. & Watts, Proc. Linn. Soc. New South Wales 40: 366. 1915. (Brotherus & Watts 1915b; Stone 1990c)
- =Fissidens rigidiusculus Broth., Proc. Linn. Soc. New South Wales 41: 577. 1916, nom. illeg. (Brotherus 1916)
- =Fissidens leptocladus var. cheesemanii Dixon, New Zealand Inst. Bull. 3(3): 101. 1923. (Dixon 1923; Beever 1999)
- =Fissidens leptocladus subsp. gonioneurus Dixon, New Zealand Inst. Bull. 3(3): 102. 1923. (Dixon 1923; Beever 1999)
- =Fissidens patulifolius Dixon, Proc. Roy. Soc. Queensland 53(2): 23. 1941. (Dixon 1942b; Seppelt & Stone 2016)
- =Fissidens pachyneuron Dixon, Notes Roy. Bot. Gard. Edinburgh 20: 93. 1948. (Dixon 1948; Streimann & Klazenga 2002)
- =Fissidens variolimbatus Allison, Trans. Roy. Soc. New Zealand, Bot. 2: 138. 1963. (Allison 1963; Beever 1999)
Fissidens leptopelma Dixon, J. Bombay Nat. Hist. Soc. 39: 773. 1937. (Dixon 1937b; Suzuki & Iwatsuki 2013b)
Fissidens leptophyllus Mont., Ann. Sci. Nat., Bot., sér. 2, 14: 344. 1840. (Montagne 1840; Pursell 2007a)
- =Fissidens micropyxis Broth., Hedwigia 45: 265. 1906. (Brotherus 1906a; Pursell 2007a)
- =Fissidens subflexinervis Broth., Hedwigia 45: 267. 1906. (Brotherus 1906a; Pursell 2007a)
- =Fissidens reesei H.A. Crum & L.E. Anderson, Bryologist 63: 35. 1960. (Crum & Anderson 1960; Pursell 2007a)
Fissidens letestui P. de la Varde, Bull. Soc. Bot. France 74: 144. 1927. (Potier de la Varde 1927; O'Shea 2006)
Fissidens leucocinctus Hampe, Linnaea 38: 222. 1874. (Hampe 1874; Bruggeman-Nannenga 2013c)
- =Fissidens pauperrimus Müll. Hal., Abh. Naturwiss. Vereins Bremen 7: 213. 1881. (Müller & Geheeb 1881; Bruggeman-Nannenga 2013c)
- =Fissidens pauperrimus Müll. Hal., Hedwigia 38: 54. 1899, nom. illeg. (Müller 1899; Bruggeman-Nannenga 2013c) ≡Fissidens rutenbergii Paris, Index Bryol. Suppl.: 164. 1900. (Bruggeman-Nannenga 2013c)
- =Fissidens dubiosus Dixon, S. African J. Sci. 18: 305. 1922. (Sim & Dixon 1922; Bruggeman-Nannenga 1997)
- =Fissidens dubiosus var. fluitans P. de la Varde, Rev. Bryol. Lichénol. 6: 132. 1933[1934]. (Potier de la Varde 1933) ≡Fissidens fluitans (P. de la Varde) Brugg.-Nann., Proc. Kon. Ned. Akad. Wetensch., C 85: 98. 1982, nom. illeg. (Bruggeman-Nannenga 1982; Bruggeman-Nannenga 1997)
- =Fissidens crispopachyloma Dixon, J. Bot. 76: 220. 1938. (Dixon 1938a; Bruggeman-Nannenga 1993)
- =Fissidens malacobryoides var. irriguus P. de la Varde, Rev. Bryol. Lichénol. 25: 213. 1956. (Potier de la Varde 1956b; Bruggeman-Nannenga 2013c)
Fissidens leucodictyus Müll. Hal., Hedwigia 36: 86. 1897. (Müller 1897e; Matteri 2003)
Fissidens liliputanus Müll. Hal., Linnaea 39: 354. 1875. (Müller 1875; O'Shea 2006)
Fissidens limbinervis Brugg.-Nann. & Z. Iwats., Misc. Bryol. Lichenol. 9: 30. 1981. (Bruggeman-Nannenga & Iwatsuki 1981; Eddy 1988)
Fissidens lindbergii A. Jaeger, Enum. Fissident.: 14. 1869. (Jaeger 1869; Pursell 2007a)

Replaced synonym: Conomitrium acutifolium Lindb. ex Müll. Hal., Bot. Zeitung (Berlin) 22: 347. 1864. (Müller 1864)
- =Fissidens schwackeanus var. terrestris Broth., Hedwigia 34: 119. 1895. (Brotherus 1895b; Pursell 2007a)
- =Fissidens crumii Hoe, Bryologist 75: 84. 1972. (Hoe 1972; Pursell & Hoe 1977)
Fissidens linearilimbatus Müll. Hal., Flora 73: 471. 1890. (Müller 1890; O'Shea 2006)
Fissidens linearis Brid., Muscol. Recent. Suppl. 4: 187. 1819[1818]. (Bridel 1819; Stone 1991)
- =Fissidens arcuatulus Broth. & Watts, Proc. Linn. Soc. New South Wales 40: 368. 1915. (Brotherus & Watts 1915b; Beever 1999) ≡Fissidens aeruginosus var. arcuatulus (Broth. & Watts) I.G. Stone, J. Bryol. 16: 238. 1990. (Stone 1990a)
- =Fissidens humilis Dixon & Watts, Proc. Linn. Soc. New South Wales 41: 384. 1916. (Stone 1991)
- =Fissidens microserratus Sakurai, Bot. Mag. (Tokyo) 47: 738. 1933. (Li et al. 2001)
- =Fissidens allisonii Dixon & Sainsbury, J. Bot. 71: 216. 1933. (Dixon & Sainsbury 1933; Stone 1991) ≡Fissidens humilis var. allisonii (Dixon & Sainsbury) Sainsbury, Rev. Bryol. Lichénol. 21: 214. 1952. (Sainsbury 1952) ≡Fissidens aeruginosus var. allisonii (Dixon & Sainsbury) I.G. Stone, J. Bryol. 18: 163. 1994. (Stone 1994a)
- =Fissidens nitidocostatus Toyama, Acta Phytotax. Geobot. 4(4): 215. 1935. (Li et al. 2001)
- =Fissidens tokioensis Sakurai, Bot. Mag. (Tokyo) 51: 8. 1937. (Li et al. 2001)
- =Fissidens jinguensis Sakurai, Bot. Mag. (Tokyo) 65: 90. 1952. (Sakurai 1952a; Li et al. 2001)
Fissidens linearis var. angustifolius (Dixon) I.G. Stone, J. Bryol. 18: 163. 1994. (Stone 1994a; Beever 1999)

Basionym: Fissidens humilis var. angustifolius Dixon, Bot. Not. 1937: 64. 1937. (Dixon & Bartram 1937)
- =Fissidens aeruginosus Hook. f. & Wilson, Fl. Nov.-Zel. 2: 62. 1854. (Stone 1994a) ≡Fissidens linearis var. aeruginosus (Hook. f. & Wilson) I.G. Stone, J. Bryol. 16: 404. 1991. (Stone 1991)
- =Fissidens abbreviatus Mitt., Fl. Vit.: 385. 1873. (Mitten 1873a; Beever 1999)
Fissidens linearis Brid. var. linearis
Fissidens linearis var. obscuriretis (Broth. & Paris) I.G. Stone, J. Bryol. 16: 404. 1991. (Stone 1991; Suzuki & Iwatsuki 2011)

Basionym: Fissidens obscuriretis Broth. & Paris, Öfvers. Finska Vetensk.-Soc. Förh. 51A(17): 7. 1909. (Brotherus 1909b; Stone 1991)

≡Fissidens aeruginosus var. obscuriretis (Broth. & Paris) I.G. Stone, J. Bryol. 16: 241. 1990. (Stone 1990a)
- =Fissidens pascuanus Broth., Nat. Hist. Juan Fernandez 2: 243. 1920. (Brotherus 1920b; Pursell & Wigginton 2010)
- =Fissidens microhumilis Dixon, Proc. Roy. Soc. Queensland 53(2): 24. 1941. (Dixon 1942b; Stone 1991)
Fissidens littlei (R.S. Williams) Grout, Moss Fl. N. Amer. 1: 249. 1939. (Grout 1936-1939; Pursell 2007b)

Basionym: Moenkemeyera littlei R.S. Williams, Bryologist 39: 40. 1936. (Williams 1936)
Fissidens loennbergii P. de la Varde, Svensk Bot. Tidskr. 41: 3. 1947. (Potier de la Varde 1947; Bruggeman-Nannenga 2008)
Fissidens longevaginatus Dixon, J. Linn. Soc., Bot. 50: 76. 1935. (Dixon 1935a; Eddy 1988)
Fissidens longisetus Griff., Calcutta J. Nat. Hist. 2: 503. 1842. (Griffith 1842; Suzuki & Iwatsuki 2008)
- =Fissidens alanii Gangulee, Mosses E. India 2: 487. 1971. (Gangulee 1971; Bruggeman-Nannenga & Iwatsuki 1981)
Fissidens longtonianus Z. Iwats. & Tad. Suzuki, J. Bryol. 27: 244. 2005. (Iwatsuki & Suzuki 2005)
Fissidens luteofuscus I. Hagen, Rev. Bryol. 33: 53. 1906. (Hagen 1906; Ihsiba 1932)
Fissidens macaoensis Li Zhang, J. Bryol. 33(1): 50. 2011. (Zhang & Hong 2011)
Fissidens macrobryoides Müll. Hal., Linnaea 42: 243. 1879. (Müller 1879b; Matteri 2004)
Fissidens macroglossus (Broth.) Brugg.-Nann., J. Hattori Bot. Lab. 81: 162. 1997. (Bruggeman-Nannenga 1997; Bruggeman-Nannenga 2009a)

Basionym: Moenkemeyera macroglossa Broth., Mitt. Inst. Allg. Bot. Hamburg 8: 399. 1931. (Brotherus 1931)
- =Moenkemeyera macroglossoides Broth., Mitt. Inst. Allg. Bot. Hamburg 8: 399. 1931. (Brotherus 1931; Bruggeman-Nannenga 1997)
Fissidens macrosporoides Dixon & P. de la Varde, Ann. Cryptog. Exot. 3(4): 169. 1930. (Dixon & Potier de la Varde 1930; Chopra & Kumar 1981)
Fissidens macrosporus Dixon, J. Indian Bot. 2: 180. 1921. (Dixon 1921; Manjula et al. 2015)
Fissidens madecassus Schimp. ex Müll. Hal., Bot. Zeitung (Berlin) 22: 340. 1864. (Müller 1864; Bruggeman-Nannenga & Arts 2010)
- =Fissidens flavolimbatus Besch., Ann. Sci. Nat., Bot., sér. 6, 9: 332. 1880. (Bescherelle 1879; Bruggeman-Nannenga 2023)
- =Fissidens onraedtii Bizot, Rev. Bryol. Lichénol. 40: 134. 1974. (Bizot 1974; Bruggeman-Nannenga 2009a)
- =Fissidens subsarcophyllus Bizot & Onr., Rev. Bryol. Lichénol. 42: 844. 1976. (Bizot 1976; Bruggeman-Nannenga & Arts 2010)
Fissidens magnicellulatus Brugg.-Nann., Lindbergia 36: 13. 2013. (Bruggeman-Nannenga 2013a; Bruggeman-Nannenga 2013c)
Fissidens manilalii K.M. Manjula, Manju & K.P. Rajesh, Bryologist 120(3): 264. 2017. (Manjula et al. 2017)
Fissidens mariei (Besch.) Broth., Nat. Pflanzenfam. I(3): 358. 1901. (Brotherus 1901b; O'Shea 2006)

Basionym: Conomitrium mariei Besch., Ann. Sci. Nat., Bot., sér. 6, 9: 335. 1879. (Bescherelle 1879)
Fissidens marthae Cardot, Rev. Bryol. 35: 64. 1908. (Cardot 1908; Bruggeman-Nannenga 2006b)
Fissidens maschalanthus Mont., Ann. Sci. Nat., Bot., sér. 3, 4: 115. 1845. (Montagne 1845; Pursell 2007a)
Fissidens megalotis Schimp. ex Müll. Hal., Bot. Zeitung (Berlin) 16: 154. 1858. (Müller 1858; Bruggeman-Nannenga & Pursell 1995)
- =Fissidens vittatus Hook. f. & Wilson, Fl. Tasman. 2: 167. 1859. (Beever 1999)
- =Fissidens macowanianus Müll. Hal., Hedwigia 38: 53. 1899. (Müller 1899; Bruggeman-Nannenga & Pursell 1995)
- =Fissidens forsythii Broth., Proc. Linn. Soc. New South Wales 41: 576. 1916. (Brotherus 1916; Seppelt & Stone 2016)
Fissidens megalotis subsp. helictocaulos (Müll. Hal.) Brugg.-Nann., J. Hattori Bot. Lab. 81: 163. 1997. (Bruggeman-Nannenga 1997; O'Shea 2006)

Basionym: Fissidens helictocaulos Müll. Hal., Bot. Zeitung (Berlin) 22: 341. 1864. (Müller 1864; Bruggeman-Nannenga 1997)
- =Fissidens calcicola Müll. Hal., Linnaea 40: 290. 1876. (Müller 1876; Kis 1985)
- =Fissidens pseudorufescens Müll. Hal., Flora 62: 376. 1879. (Müller 1879a; Bruggeman-Nannenga 1997)
- =Fissidens latifolius Dixon, S. African J. Sci. 18: 305. 1922. (Sim & Dixon 1922; Bruggeman-Nannenga 1997)
- =Fissidens badoglioi Tongiorgi, Nuovo Giorn. Bot. Ital., n.s. 45: 219, 220. 1938. (Tongiorgi 1938; Bruggeman-Nannenga 1997)
- =Fissidens alatus P. de la Varde, Bull. Mus. Natl. Hist. Nat. 15: 239. 1943. (Bruggeman-Nannenga 1997)
- =Fissidens vesiculosus Demaret & V. Leroy bis, Explor. Parc Natl. Albert, Mission Lebrun 6: 5. 1944. (Demaret & Leroy 1944; Bruggeman-Nannenga 1997)
Fissidens megalotis Schimp. ex Müll. Hal. subsp. megalotis
Fissidens menyhartii Müll. Hal., Hedwigia 38: 54. 1899. (Müller 1899; O'Shea 2006)
Fissidens metzgeria (Müll. Hal.) Broth., Öfvers. Finska Vetensk.-Soc. Förh. 35: 38. 1893. (Brotherus 1893b; Bruggeman-Nannenga 2017)

Basionym: Conomitrium metzgeria Müll. Hal., Linnaea 39: 358. 1875. (Müller 1875)

≡Polypodiopsis metzgeria (Müll. Hal.) A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1874–75: 132. 1876. (Jaeger 1876) ≡Schistophyllum metzgeria (Müll. Hal.) Lindb., Utkast Eur. Bladmoss.: 16. 1878. (Lindberg 1878)
- =Fissidens bryum Müll. Hal. ex Dusén, Kongl. Svenska Vetensk. Acad. Handl., n.s. 28(2): 14. 1895. (Dusén 1895; Bruggeman-Nannenga 2017) ≡Conomitrium bryum (Müll. Hal. ex Dusén) Müll. Hal., Gen. Musc. Frond.: 74. 1900. (Müller 1901; Bruggeman-Nannenga 2017)
- =Fissidens bryum var. terrestris P. de la Varde, Rev. Bryol., n.s. 4: 57. 1931. (Bruggeman-Nannenga 2009a)
Fissidens michoacanus Thér., Smithsonian Misc. Collect. 78(2): 12. 1926. (Thériot 1926b; Pursell 2007a)
- =Fissidens brouardii Thér., Smithsonian Misc. Collect. 78(2): 11. 1926. (Thériot 1926b; Pursell 2007a)
Fissidens microcarpus Mitt., J. Proc. Linn. Soc., Bot. 7: 162. 1863. (Mitten 1863; Bruggeman-Nannenga & Pursell 1990)

≡Conomitrium microcarpum (Mitt.) A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1874–75: 125. 1876. (Jaeger 1876)
- =Fissidens konkourae Paris & Broth., Rev. Bryol. 31: 84. 1904. (Bruggeman-Nannenga & Pursell 1990) ≡Moenkemeyera konkourae (Paris & Broth.) P. de la Varde, Rev. Bryol. Lichénol. 19: 11. 1950. (Potier de la Varde 1950; Bruggeman-Nannenga et al. 1994)
- =Fissidens guineensis Paris & Broth., Mém. Soc. Bot. France 14: 11. 1908. (Bruggeman-Nannenga & Pursell 1990)
- =Moenkemeyera subsphaerocarpa P. de la Varde, Rev. Bryol. Lichénol. 20: 3. 1951. (Potier de la Varde 1951; Bruggeman-Nannenga et al. 1994) ≡Fissidens subsphaerocarpus (P. de la Varde) Brugg.-Nann., Syst. Stud. Fissidens: 158. 1988. (Bruggeman-Nannenga 1988; Bruggeman-Nannenga et al. 1994)
Fissidens microdictyon Dixon & P. de la Varde, Arch. Bot. Bull. Mens. 1(8–9): 163. 1927. (Dixon & Potier de la Varde 1927; Dandotiya et al. 2011)
Fissidens micronesicus H. Whittier, Beih. Nova Hedwigia 11: 8. 1963. (Miller et al. 1963; Miller et al. 1978)
Fissidens microstictus Dixon & Luisier, Brotéria, Ci. Nat. 6: 89. 1937. (Luisier 1937; Hodgetts et al. 2020)
Fissidens minutifolius Broth. & P. de la Varde, Bull. Soc. Bot. France 73: 59. 1926. (Potier de la Varde 1926b; Bruggeman-Nannenga 2017)
Fissidens minutifrons Pursell & D.H. Norris, Bryologist 113(1): 129. 2010. (Pursell & Norris 2010)
Fissidens minutipes (Müll. Hal.) Broth., Nat. Pflanzenfam. I(3): 358. 1901. (Brotherus 1901b; Bordin et al. 2018)

Basionym: Conomitrium minutipes Müll. Hal., Hedwigia 39: 242. 1900. (Müller 1900)
- =Moenkemeyera termitarum Herzog, Beih. Bot. Centralbl., Abt. 2, 26(2): 59. 1909. (Herzog 1909; Bordin et al. 2018) ≡Fissidens termitarum (Herzog) Pursell, Bryologist 82: 62. 1979. (Pursell 1979; Bordin et al. 2018)
Fissidens minutulus Sull., Amer. J. Sci. Arts, ser. 2, 1: 72. 1846. (Gray 1846; Pursell 2007b)

≡Fissidens incurvus var. minutulus (Sull.) Austin, Musci Appalach.: 102. 1870. (Austin 1870) ≡Schistophyllum minutulum (Sull.) Lindb., Bidr. Nordens Mossfl.: 70. 1887. (Lindberg 1887) ≡Fissidens pusillus var. minutulus (Sull.) Husn., Muscol. Gall.: 431. 1894, nom. illeg. (Husnot 1884–1894) ≡Fissidens incurvus subsp. minutulus (Sull.) Kindb., Eur. N. Amer. Bryin. 2: 170. 1897[1898]. (Kindberg 1897) ≡Fissidens viridulus subsp. minutulus (Sull.) Waldh., Skand. Bladmossfl.: 341. 1939. ≡Fissidens pusillus subsp. minutulus (Sull.) P. de la Varde, Rev. Bryol. Lichénol. 15: 31. 1946, nom. illeg.
Fissidens monguillonii Thér., Bull. Soc. Agric. Sarthe, sér. 2, 29(1): 112. 1899. (Thériot & Monguillon 1899; Bruggeman-Nannenga 1985)

≡Fissidens rivularis var. monguillonii (Thér.) Podp., Consp. Musc. Eur.: 83. 1954. (Podpěra 1954)
Fissidens mooreae H. Whittier & H.A. Mill., Bryologist 70: 85. 1967. (Whittier & Miller 1967; Miller et al. 1978)
Fissidens mosquensis Ignatov & Ignatova, Arctoa 32(1): 62. 2023. (Ignatov et al. 2023)
Fissidens nanobryoides Besch., Bull. Soc. Bot. France 45: 58. 1898. (Bescherelle 1898a; Miller et al. 1978)
Fissidens narbonensis Roum., Bull. Soc. Bot. France 16: 437. 1869, nom. dub. (Roumeguère 1869; Ros et al. 2013)
Fissidens neglectus H.A. Crum, Bryologist 63: 95. 1960. (Crum 1960; Pursell 2007a)
Fissidens neomagofukui Z. Iwats. & Tad. Suzuki, J. Hattori Bot. Lab. 92: 165. 2002. (Iwatsuki & Suzuki 2002; Daniels et al. 2017)
Fissidens nigerianus Bizot, Rev. Bryol. Lichénol. 40(2): 101. 1974. (Bizot 1974; Bruggeman-Nannenga 2017)
Fissidens nigroviridis E.S. Salmon, Ann. Bot. (Oxford) 13: 123. 1899. (Salmon 1899; Suzuki 2014)
Fissidens nobilis Griff., Calcutta J. Nat. Hist. 2: 505. 1842. (Griffith 1842; Iwatsuki & Suzuki 1982)
- =Fissidens filicinus Dozy & Molk., Musc. Frond. Archip. Ind.: 7. 1844. (Dozy & Molkenboer 1844; Eddy 1988)
- =Fissidens japonicus Dozy & Molk., Pl. Jungh.: 313. 1854. (Norris & Koponen 1987)
- =Fissidens schismoides Sakurai, Bot. Mag. (Tokyo) 53: 60. 1939. (Iwatsuki 1991)
Fissidens nobilis var. contractus P. de la Varde, Rev. Gén. Bot. 29: 295. 1917. (Potier de la Varde 1917; He & Nguyen 2012)
Fissidens nobilis Griff. var. nobilis
Fissidens nobreganus Luisier & P. de la Varde, Brotéria, Ci. Nat. 22: 184. 1953. (Luisier 1953; Lobo et al. 2011)
Fissidens noronhensis T.P. Teixeira, Bordin & Carv.-Silva, Cryptog., Bryol. 43(1): 4. 2022. (Teixeira et al. 2022)
Fissidens nothotaxifolius Pursell & Hoe, Bryologist 78: 477. 1975[1976]. (Pursell & Hoe 1975; Staples et al. 2004)
Fissidens oblatus I.G. Stone & Catches., J. Bryol. 17: 621. 1993. (Stone & Catcheside 1993)
Fissidens obliquifolius Müll. Hal., Hedwigia 36: 86. 1897. (Müller 1897e; Matteri 2003)
Fissidens oblongifolius Hook. f. & Wilson, London J. Bot. 3: 547. 1844. (Hooker & Wilson 1844; Pursell 2007a)
- =Fissidens capitatus Hook. f. & Wilson, London J. Bot. 3: 547. 1844. (Hooker & Wilson 1844; Beever 1999)
- =Fissidens mangarevensis Mont., Ann. Sci. Nat., Bot., sér. 3, 4: 113. 1845. (Montagne 1845; Iwatsuki & Suzuki 1996)
- =Fissidens campylopus Mont., Ann. Sci. Nat., Bot., sér. 3, 4: 116. 1845. (Montagne 1845; Pursell 2007a)
- =Fissidens oblongifolius var. capitatus Wilson, Fl. Nov.-Zel. 2: 62. 1854. (Bruggeman-Nannenga et al. 1994)
- =Fissidens pungens Sull. & Lesq., Char. New Musci: 2. 1859, nom. illeg. (Sullivant & Lesquereux 1859; Pursell 2007a) ≡Fissidens acutus A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1874–75: 93. 1876. (Jaeger 1876; Iwatsuki & Suzuki 1996) ≡Fissidens hongkongiae Müll. Hal., Gen. Musc. Frond.: 66. 1900, nom. illeg. (Müller 1901; Iwatsuki & Suzuki 1996)
- =Fissidens similiretis Sull., Musci Cub. Wright.: 274. 1861. (Sullivant 1861; Florschütz-de Waard 2011)
- =Fissidens paucifolius Besch., Ann. Sci. Nat., Bot., sér. 5, 18: 200. 1873. (Bescherelle 1873; Pursell 2007a)
- =Fissidens kriegeri Schimp. ex Besch., Ann. Sci. Nat., Bot., sér. 5, 18: 201. 1873. (Bescherelle 1873; Pursell 2007a)
- =Fissidens neocaledonicus Besch., Ann. Sci. Nat., Bot., sér. 5, 18: 201. 1873. (Bescherelle 1873; Pursell 2007a)
- =Fissidens arcuatus Besch., Ann. Sci. Nat., Bot., sér. 5, 18: 202. 1873. (Bescherelle 1873; Pursell 2007a)
- =Fissidens samoanus Müll. Hal., J. Mus. Godeffroy 3(6): 59. 1874. (Iwatsuki & Suzuki 1996)
- =Fissidens firmiusculus Besch., Rev. Bryol. 18: 50, 53. 1891. (Pursell 2007a)
- =Fissidens mangarevensis var. tahitensis Besch., Ann. Sci. Nat., Bot., sér. 7, 20: 22. 1894. (Miller et al. 1978)
- =Fissidens zuernianus Müll. Hal., Gen. Musc. Frond.: 68. 1900. (Müller 1901; Pursell 2007a)
- =Fissidens helleri Renauld & Cardot, Bull. Soc. Roy. Bot. Belgique 41(1): 49. 1905. (Pursell 2007a)
- =Fissidens renauldii Thér., Bull. Acad. Int. Géogr. Bot. 17: 307. 1907. (Thériot 1907a; Pursell 2007a)
- =Fissidens rigidifolius Thér., Bull. Acad. Int. Géogr. Bot. 19: 21. 1909. (Thériot 1909; Pursell 2007a)
- =Fissidens arcuatus var. longisetus Thér., Bull. Acad. Int. Géogr. Bot. 20: 97. 1910. (Thériot 1910a; Iwatsuki & Suzuki 1989)
- =Fissidens humicola Thér., Rev. Bryol. 48: 13. 1921. (Thériot 1921b; Pursell 2007a)
- =Fissidens subarboreus Broth. & P. de la Varde, Bull. Soc. Bot. France 74: 143. 1927. (Potier de la Varde 1927; Pursell 2007a) ≡Moenkemeyera subarborea (Broth. & P. de la Varde) Bizot, Bull. Inst. Fondam. Afrique Noire, Sér. A, Sci. Nat. 46: 271. 1986[1990]. (Bizot et al. 1986–1987; Pursell 2007a)
- =Fissidens peracuminatus Dixon, Proc. Linn. Soc. New South Wales 55: 273. 1930. (Dixon & Greenwood 1930; Iwatsuki & Suzuki 1996)
Fissidens oblongifolius var. hyophilus (Mitt.) J.E. Beever & I.G. Stone, New Zealand J. Bot. 36: 84. 1998. (Beever & Stone 1998; Suzuki & Iwatsuki 2011)

Basionym: Fissidens hyophilus Mitt., Trans. & Proc. Roy. Soc. Victoria 19: 92. 1882. (Mitten 1883; Beever & Stone 1998)
- =Fissidens arboreus Broth., Öfvers. Finska Vetensk.-Soc. Förh. 33: 95. 1891. (Beever 1999) ≡Conomitrium arboreum (Broth.) Kindb., Enum. Bryin. Exot., Suppl. 2: 106. 1891. (Kindberg 1891; Beever 1999)
Fissidens oblongifolius var. longiligulatus (Broth. & Watts) Brugg.-Nann., Pursell & Z. Iwats., J. Hattori Bot. Lab. 77: 265. 1994. (Bruggeman-Nannenga et al. 1994; Streimann & Klazenga 2002)

Basionym: Fissidens longiligulatus Broth. & Watts, Proc. Linn. Soc. New South Wales 40: 367. 1915. (Brotherus & Watts 1915b; Bruggeman-Nannenga et al. 1994)

≡Fissidens hyophilus var. longiligulatus (Broth. & Watts) I.G. Stone, J. Bryol. 16: 245. 1990. (Stone 1990b)
Fissidens oblongifolius Hook. f. & Wilson var. oblongifolius
Fissidens oblongifolius var. palmerstonensis (I.G. Stone) J.E. Beever & I.G. Stone, New Zealand J. Bot. 36: 87. 1998. (Beever & Stone 1998; Streimann & Klazenga 2002)

Basionym: Fissidens hyophilus var. palmerstonensis I.G. Stone, J. Bryol. 18: 159. 1994. (Stone 1994a)
Fissidens obscurifrons Brugg.-Nann., Polish Bot. J. 58(1): 118. 2013. (Bruggeman-Nannenga 2013b; Bruggeman-Nannenga 2013c)
Fissidens obscurocostatus Pursell, Bryologist 69: 495. 1966[1967]. (Pursell 1966; Pursell 2007a)
Fissidens obscurus Mitt., J. Proc. Linn. Soc., Bot., Suppl. 1(2): 138. 1859. (Mitten 1859; Iwatsuki & Suzuki 1982)
- =Fissidens yakumontanus Nog., J. Jap. Bot. 27: 285. 1952. (Noguchi 1952a; Noguchi & Iwatsuki 1987)
Fissidens obtusatulus (Müll. Hal.) Broth., Nat. Pflanzenfam. I(3): 358. 1901. (Brotherus 1901b; Yano 2011)

Basionym: Conomitrium obtusatulum Müll. Hal., Hedwigia 39: 242. 1900. (Müller 1900)
Fissidens obtusifolius Wilson, London J. Bot. 4: 196. 1845. (Wilson 1845; Pursell 2007b)
- =Fissidens obtusifolius var. kansanus Renauld & Cardot, Bot. Gaz. 15: 40. 1890. (Pursell 1997a)
- =Fissidens obtusifolius var. marginatus Flowers, Bryologist 76: 289. 1973. (Flowers 1973; Pursell 1997a)
Fissidens obtusissimus (Florsch.) Pursell, Bryologist 92: 524. 1989. (Pursell 1989; Pursell 2007a)

Basionym: Fissidens leptophyllus f. obtusissimus Florsch., Fl. Suriname 6(1): 52. 1964. (Florschütz 1964)
Fissidens obtusoapiculatus Dixon, J. Siam Soc., Nat. Hist. Suppl. 9(1): 6. 1932. (Dixon 1932b; Tan & Iwatsuki 1993)
Fissidens ocellatus P. de la Varde, Ann. Cryptog. Exot. 4: 42. 1931. (Potier de la Varde 1931a; Bruggeman-Nannenga 1997)
- =Fissidens loyei Bizot & Dury, Rev. Bryol. Lichénol. 40: 133. 1974. (Bizot 1974; Bruggeman-Nannenga 1997)
Fissidens odontoloma Müll. Hal., Linnaea 42: 242. 1879. (Müller 1879b; Matteri 2003)
Fissidens oediloma Müll. Hal. ex Broth., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 21, Afd. 3(3): 15. 1895. (Brotherus 1895a; Pursell 2007a)
- =Fissidens crenatulus Müll. Hal., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 3(3): 16. 1895. (Brotherus 1895a; Pursell 2007a)
- =Fissidens apiahyensis Besch. & Geh., Rev. Bryol. 28: 62. 1901. (Pursell 2007a)
Fissidens opacifolius Mitt., Trans. Linn. Soc. London 23: 54. 1860. (Mitten 1860; O'Shea 2006)
Fissidens orishae Gangulee, Nova Hedwigia 8: 140. 1964. (Gangulee 1964; Siddiqui 2007)
Fissidens ornaticostatus H. Rob., Phytologia 26: 116. 1974. (Robinson 1974; Pursell 2007a)
Fissidens ornatus Herzog, Arch. Bot. São Paulo 1(2): 57. 1924. (Herzog 1924; Pursell 2007a)
Fissidens osmundioides Hedw., Sp. Musc. Frond.: 153. 1801. (Hedwig 1801; Pursell 2007b)

≡Dicranum osmundioides (Hedw.) Turner, Muscol. Hibern. Spic.: 55. 1804. (Turner 1804a) ≡Skitophyllum osmundioides (Hedw.) Bach. Pyl., J. Bot. Agric. 4: 148. 1815. ≡Dicranum palmatum var. osmundioides (Hedw.) Arn., Disp. Méth. Mousses: 28. 1825. ≡Dicranum viridulum var. osmundioides (Hedw.) Duby, Bot. Gall. 2: 567. 1830, nom. illeg. ≡Conomitrium osmundioides (Hedw.) Müll. Hal., Syn. Musc. Frond. 2: 526. 1851. (Müller 1851) ≡Fissidens bryoides var. osmundioides (Hedw.) Mathieu, Fl. Gén. Belgique 2: 53. 1853. ≡Osmundula fissidentoides Rabenh., Krypt.-Fl. Sachsen 1: 609. 1863, nom. illeg. ≡Schistophyllum osmundioides (Hedw.) Lindb., Musci Scand.: 13. 1879. (Lindberg 1879)
- =Fissidens dicarpos Brid., Muscol. Recent. Suppl. 4: 190. 1819[1818]. (Bridel 1819; Wijk et al. 1962)
- =Fissidens osmundioides var. pensylvanicus Brid., Bryol. Univ. 2: 690. 1827. (Bridel 1827; Crum & Anderson 1981)
- =Fissidens osmundioides var. microcarpus Bruch & Schimp., Bryol. Eur. 1: 192. 1843. (Bruch & Schimper 1843) ≡Schistophyllum osmundioides var. microcarpum (Bruch & Schimp.) Kindb., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 7(9): 57. 1883. (Kindberg 1883) ≡Fissidens osmundioides f. microcarpus (Bruch & Schimp.) Mönk., Laubm. Eur.: 134. 1927. (Podpěra 1954)
- =Fissidens riparius J.J. Amann, Rev. Bryol. 16: 54. 1889. (Wijk et al. 1962) ≡Fissidens osmundioides var. riparius (J.J. Amann) I. Hagen, Laubm. Eur.: 134. 1927. (Mönkemeyer 1927)
- =Fissidens osmundioides var. japonicus Cardot, Bull. Herb. Boissier, sér. 2, 7: 716. 1907. (Cardot 1907; Suzuki 2016)
- =Fissidens osmundioides var. obliquus Kindb., Rev. Bryol. 36: 42. 1909. (Crum & Anderson 1981)
- =Fissidens taelingensis C. Gao, Fl. Musc. Chin. Boreali-Orient.: 378. 1977. (Liaoning Forestry and Soil Institute 1977; Li et al. 2001)
Fissidens ovatifolius R. Ruthe, Laubm. Deutschl. 3: 677. 1901. (Limpricht 1885–1903; Suzuki & Iwatsuki 2013c)
- =Fissidens bryoides var. obductus Venturi, Atti Soc. Crittog. Ital. 3: 194. 1884. ≡Fissidens obductus (Venturi) Giacom., Arch. Bot. (Forlì) 15: 284. 1939. (Corley 1980)
- =Fissidens canariensis Bryhn, Kongel. Norske Vidensk. Selsk. Skr. (Trondheim) 1908(8): 15. 1908, nom. illeg. (Hagen 1908; Dirkse et al. 1993)
- =Fissidens perssonii P. de la Varde, Bot. Not. 1939: 572. 1939. (Dirkse et al. 1993)
Fissidens ovatus Brid., Muscol. Recent. Suppl. 4: 190. 1819[1818]. (Bridel 1819; Bruggeman-Nannenga & Arts 2010)
- =Fissidens thunbergii Brid., Muscol. Recent. Suppl. 4: 191. 1819[1818]. (Bridel 1819; Bruggeman-Nannenga 1997)
- =Fissidens glaucescens Hornsch., Linnaea 15: 154. 1841. (Bruggeman-Nannenga 1997)
- =Fissidens mucronatus Schimp. ex Müll. Hal., Bot. Zeitung (Berlin) 16: 154. 1858. (Müller 1858; O'Shea 2006)
- =Fissidens lanceolatus Hampe, Bot. Zeitung (Berlin) 28: 36. 1870. (O'Shea 2006)
- =Fissidens cymatophyllus Müll. Hal., Linnaea 42: 238. 1879. (Müller 1879b; O'Shea 2006) ≡Fissidens ovatus f. cymatophyllus (Müll. Hal.) Bizot ex G. Kis, Proc. Third Meeting Bryol. C. & E. Europe: 220. 1984. (Kis 1984)
- =Fissidens undifolius Müll. Hal., Flora 71: 407. 1888. (Müller 1888; Bruggeman-Nannenga 1997)
- =Fissidens ovatus var. elatior Renauld & Cardot, Rev. Bot. Bull. Mens. 10: 659. 1892. (Renauld 1892; Bruggeman-Nannenga 1997)
- =Fissidens fluminalis Dusén, Kongl. Svenska Vetensk. Acad. Handl., n.s. 28(2): 6. 1895. (Dusén 1895; Bruggeman-Nannenga 1997)
- =Fissidens rehmannii Müll. Hal., Hedwigia 38: 56. 1899. (Müller 1899; O'Shea 2006)
- =Fissidens ovatus var. ochroloma Renauld & Cardot, Suppl. Prodr. Fl. Bryol. Madagascar: 37. 1909. (Renauld 1909; Bruggeman-Nannenga 1997)
- =Fissidens zuluensis Broth. & Bryhn, Forh. Vidensk.-Selsk. Kristiania 1911(4): 11. 1911. (O'Shea 2006)
- =Fissidens procerior Broth. & Bryhn, Forh. Vidensk.-Selsk. Kristiania 1911(4): 9. 1911. (O'Shea 2006)
Fissidens pachylomadelphus Demaret & P. de la Varde, Bull. Jard. Bot. État Bruxelles 27: 758. 1957. (Demaret & Potier de la Varde 1957; Bruggeman-Nannenga 2013c)
Fissidens pachyphyllus Dixon, J. Linn. Soc., Bot. 50: 79. 1935. (Dixon 1935a; Eddy 1988)
Fissidens pacificus Ångstr., Öfvers. Kongl. Vetensk.-Akad. Förh. 29(4): 21. 1872. (Ångström 1872; Staples et al. 2004)
- =Fissidens mauiensis Müll. Hal., Flora 82: 435. 1896. (Müller 1896a; Pursell & Hoe 1977)
- =Fissidens altogracilis Müll. Hal., Bull. Herb. Boissier 5: 850. 1897. (Müller 1897c; Pursell & Hoe 1977)
Fissidens pallidinervis Mitt., J. Linn. Soc., Bot. 12: 592. 1869. (Mitten 1869; Pursell 2007a)
- =Fissidens minutus Thwaites & Mitt., J. Linn. Soc., Bot. 13: 323. 1873. (Mitten 1873b; Tan & Choy 2002)
- =Fissidens garberi Lesq. & James, Proc. Amer. Acad. Arts 14: 137. 1879. (Pursell 2007a)
- =Fissidens edamensis M. Fleisch., Musci Buitenzorg 1: 36. 1904. (Bruggeman-Nannenga 2009a)
- =Fissidens geniculatus Thér., Bull. Acad. Int. Géogr. Bot. 17: 306. 1907. (Thériot 1907a; Thouvenot & Bardat 2010)
- =Fissidens geniculatus var. subimmarginatus Thér., Bull. Acad. Int. Géogr. Bot. 20: 97. 1910. (Thériot 1910a; Thouvenot & Bardat 2010)
- =Fissidens dumbeanus Thér., Bull. Acad. Int. Géogr. Bot. 20: 98. 1910. (Thériot 1910a; Thouvenot & Bardat 2010)
- =Fissidens corallicola Broth. & Paris, Öfvers. Finska Vetensk.-Soc. Förh. 53A(11): 10. 1911. (Thouvenot & Bardat 2010)
- =Fissidens mateoensis Broth., Biblioth. Bot. 87: 27. 1916. (Herzog 1916; Pursell 2007a)
- =Fissidens chungii Thér., Ann. Cryptog. Exot. 5: 167. 1932. (Potier de la Varde 1932a; Pursell 2007a)
- =Fissidens nakamurae Sakurai, Bot. Mag. (Tokyo) 51: 10. 1937. (Pursell 2007a)
- =Fissidens pusillissimus Steere, Ann. Bryol. 10: 116. 1938. (Steere 1937; Pursell 2007a) ≡Fissidens microcladus var. pusillissimus (Steere) Pursell, J. Hattori Bot. Lab. 55: 243. 1984. (Pursell 1984) ≡Fissidens minutus var. pusillissimus (Steere) Pursell, Mem. New York Bot. Gard. 69: 53. 1994. (Sharp et al. 1994)
- =Fissidens rizalensis E.B. Bartram, Philipp. J. Sci. 68: 17. 1939. (Bartram 1939b; Pursell 2007a)
Fissidens pallidus Hook. f. & Wilson, Fl. Nov.-Zel. 2: 62. 1854. (Hooker 1855; Beever 2014)
- =Fissidens howeanus Broth. ex Whitel., Proc. Linn. Soc. New South Wales 7: 277. 1892. (Bruggeman-Nannenga et al. 1994)
- =Fissidens nitidulus Thér., Bull. Acad. Int. Géogr. Bot. 20: 98. 1910. (Thériot 1910a; Bruggeman-Nannenga et al. 1994)
- =Fissidens fallaciosus Thér., Diagn. Esp. Var. Nouv. Mouss. 8: 3. 1910. (Thériot 1910b; Bruggeman-Nannenga et al. 1994)
- =Fissidens taoensis Thér., Diagn. Esp. Var. Nouv. Mouss. 8: 3. 1910. (Thériot 1910b; Bruggeman-Nannenga et al. 1994)
- =Fissidens nitidulus var. integrifolius Thér., Diagn. Esp. Var. Nouv. Mouss. 8: 3. 1911. (Thériot 1910b; Iwatsuki & Suzuki 1989)
- =Fissidens whiteleggei Müll. Hal. ex Rodway, Pap. & Proc. Roy. Soc. Tasmania 1912: 135. 1913. (Bruggeman-Nannenga et al. 1994)
- =Fissidens latinervis Thér., Rev. Bryol. 48: 13. 1921. (Thériot 1921b; Bruggeman-Nannenga et al. 1994)
- =Fissidens perpellucidus Dixon, J. Linn. Soc., Bot. 50: 78. 1935. (Dixon 1935a; Bruggeman-Nannenga et al. 1994)
- =Fissidens flexifolius E.B. Bartram, Brittonia 9: 33. 1957. (Bartram 1957; Bruggeman-Nannenga et al. 1994)
Fissidens pallidus var. caniensis I.G. Stone, J. Bryol. 18: 159. 1994. (Stone 1994a; Streimann & Klazenga 2002)
Fissidens pallidus Hook. f. & Wilson var. pallidus
Fissidens palmatus Hedw., Sp. Musc. Frond.: 154. 1801. (Hedwig 1801; Pursell 2007a)

≡Dicranum palmatum (Hedw.) F. Weber & D. Mohr, Index Mus. Pl. Crypt.: 2 [recto]. 1803. (Weber & Mohr 1803) ≡Skitophyllum palmatum (Hedw.) Bach. Pyl., J. Bot. Agric. 4: 146. 1815. ≡Conomitrium palmatum (Hedw.) Müll. Hal., Syn. Musc. Frond. 2: 526. 1851. (Müller 1851)
- =Conomitrium reticulosum Müll. Hal., Syn. Musc. Frond. 2: 525. 1851. (Müller 1851; Florschütz-de Waard 2011) ≡Fissidens reticulosus (Müll. Hal.) A. Jaeger, Enum. Fissident.: 13. 1869. (Florschütz-de Waard 2011)
- =Fissidens sphagnifolius Sull., Musci Cub. Wright.: 275. 1861. (Sullivant 1861; Pursell 2007a)
- =Conomitrium hookeriaceum Müll. Hal., Bull. Herb. Boissier 5: 173. 1897. (Müller 1897a; Grout 1943) ≡Fissidens hookeriaceus (Müll. Hal.) Paris, Index Bryol. Suppl.: 160. 1900. (Grout 1943)
Fissidens palmifolius (P. Beauv.) Broth., Nat. Pflanzenfam. I(3): 362. 1901. (Brotherus 1901b; Bruggeman-Nannenga & Arts 2010)

Basionym: Mnium palmifolium P. Beauv., Prodr. Aethéogam.: 76. 1805. (Palisot de Beauvois 1805)

≡Bryum palmifolium (P. Beauv.) Brid., Bryol. Univ. 1: 687. 1826. (Bridel 1826) ≡Conomitrium palmifolium (P. Beauv.) Besch., Ann. Sci. Nat., Bot., sér. 6, 9: 335. 1880. (Bescherelle 1879)
- =Fissidens debilis Schwägr., Sp. Musc. Frond., Suppl. 1, 2: 11. 1816. (Schwägrichen 1816; Bruggeman-Nannenga & Arts 2010) ≡Octodiceras debile (Schwägr.) Jenn., Man. Mosses W. Pennsylvania: 87. 1913. (Jennings 1913; Bruggeman-Nannenga & Arts 2010)
- =Conomitrium capense Müll. Hal., Syn. Musc. Frond. 2: 524. 1851. (Müller 1851; Pursell 1987) ≡Octodiceras capense (Müll. Hal.) A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1874–75: 135 (Gen. Sp. Musc. 2: 51). 1876. (Jaeger 1876; Pursell 1987) ≡Fissidens capensis (Müll. Hal.) Broth., Nat. Pflanzenfam. I(3): 362. 1901. (Pursell 1987)
- =Conomitrium borbonicum Müll. Hal., Bot. Zeitung (Berlin) 22: 347. 1864. (Pursell 1987) ≡Octodiceras borbonicum (Müll. Hal.) A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1874–75: 134. 1876. (Jaeger 1876; Pursell 1987)
Fissidens palmifolius (P. Beauv.) Broth. var. palmifolius
Fissidens palmifolius var. semilimbatus Brugg.-Nann., Cryptog., Bryol. 25: 313. 2004. (Bruggeman-Nannenga 2004; O'Shea 2006)
Fissidens papillisetus Brugg.-Nann., Cryptog., Bryol. 43(2): 23. 2022. (Bruggeman-Nannenga 2022a; Bruggeman-Nannenga 2022b)
Fissidens parkii Mitt., Trans. Linn. Soc. London 23: 56. 1860. (Mitten 1860; Bruggeman-Nannenga 2009a)
- =Moenkemeyera mirabilis Müll. Hal., Flora 69: 506. 1886. (Müller 1886; Bruggeman-Nannenga 1988)
- =Moenkemeyera hians Müll. Hal., Hedwigia 39: 238. 1900. (Bruggeman-Nannenga 1997)
- =Moenkemeyera macrocarpa Broth. & Paris, Rev. Bryol. 38: 27. 1911. (Paris 1911; Bruggeman-Nannenga 1988)
- =Moenkemeyera flexipes P. de la Varde, Arch. Bot. Bull. Mens. 3: 6. 1929. (Potier de la Varde 1929b; Bruggeman-Nannenga 1988)
Fissidens patentifolius Schiavone, Lilloa 35(3): 53. 1981. (Schiavone 1981; Matteri 2003)
Fissidens pauperculus M. Howe, Erythea 2: 97. 1894. (Howe 1894; Pursell 2007b)
Fissidens pechuelii (Müll. Hal.) Paris, Actes Soc. Linn. Bordeaux 49(3): 156. 1895. (Paris 1895; O'Shea 2006)

Basionym: Conomitrium pechuelii Müll. Hal., Flora 69: 503. 1886. (Müller 1886)
Fissidens pellucidus Hornsch., Linnaea 15: 146. 1841. (Hornschuch 1841; Pursell 2007a)

≡Conomitrium pellucidum (Hornsch.) Müll. Hal., Syn. Musc. Frond. 2: 525. 1851. (Müller 1851)
- =Fissidens subcrenatus Schimp., Syn. Musc. Frond. 2: 531. 1851. (Müller 1851; Pursell 2007a)
- =Fissidens laxus Sull. & Lesq., Char. New Musci: 1. 1859. (Sullivant & Lesquereux 1859; Bruggeman-Nannenga & Pursell 1995) ≡Fissidens crassinervis var. laxus (Sull. & Lesq.) A. Eddy, Handb. Males. Mosses 1: 70. 1988. (Eddy 1988)
- =Fissidens ripensis Mitt., Trans. Linn. Soc. London 23: 55. 1860. (Mitten 1860; Pursell 2007a)
- =Fissidens rufulus Sull., Musci Cub. Wright.: 275. 1861, nom. illeg. (Sullivant 1861; Pursell 2007a) ≡Fissidens wrightii A. Jaeger, Enum. Fissident.: 12. 1869. (Pursell 2007a) ≡Fissidens flexinervis Mitt., J. Linn. Soc., Bot. 12: 588. 1869, nom. illeg. (Mitten 1869; Pursell 2007a) ≡Conomitrium wrightii (A. Jaeger) Müll. Hal., Linnaea 39: 364. 1875. (Müller 1875; Pursell 2007a) ≡Fissidens prionodes f. flexinervis Florsch., Fl. Suriname 6(1): 61. 1964. (Florschütz 1964)
- =Fissidens crassinervis Thwaites & Mitt., J. Linn. Soc., Bot. 13: 323. 1873, nom. illeg. (Mitten 1873b; Pursell 2007a) ≡Fissidens mittenii Paris, Index Bryol.: 477. 1895. (Li et al. 2001)
- =Fissidens cryptarum Müll. Hal., Linnaea 39: 352. 1875. (Müller 1875; Pursell 2007a)
- =Fissidens holstii Broth., Bot. Jahrb. Syst. 20: 181. 1894. (Brotherus 1894; Pursell 2007a)
- =Fissidens calabariae Müll. Hal. ex Dusén, Kongl. Svenska Vetensk. Acad. Handl., n.s. 28(2): 10. 1895. (Dusén 1895; Pursell 2007a)
- =Fissidens grandiretis Renauld & Cardot, Prodr. Fl. Bryol. Madagascar: 115. 1898. (Renauld 1897; Pursell 2007a)
- =Fissidens mittenii var. javensis M. Fleisch., Hedwigia 38(Beibl.): 128. 1899. (Müller 1899; Tan & Choy 2002) ≡Fissidens laxus var. javensis (M. Fleisch.) B.C. Tan & Mohamed, Bryologist 91: 27. 1988. (Mohamed & Tan 1988)
- =Fissidens dispersus Cardot, Rev. Bryol. 36: 17. 1909. (Cardot 1909a; Pursell 2007a)
- =Fissidens pyrenocystis Cardot, Rev. Bryol. 37: 121. 1910. (Pursell 2007a)
- =Fissidens amblyotis Dixon, Bull. Torrey Bot. Club 51: 229. 1924. (Dixon 1924; Pursell 2007a)
- =Fissidens propinquus P. de la Varde, Bull. Soc. Bot. France 72: 352. 1925. (Potier de la Varde 1925a; Pursell 2007a)
- =Fissidens crispidioides Broth., Mitt. Inst. Allg. Bot. Hamburg 7(2): 115. 1928. (Brotherus 1928; Pursell 2007a)
- =Fissidens rivicola Broth. & P. de la Varde, Arch. Bot. Bull. Mens. 3: 3. 1929. (Potier de la Varde 1929b; O'Shea 2006)
- =Fissidens vitiensis Dixon, Proc. Linn. Soc. New South Wales 55: 272. 1930. (Dixon & Greenwood 1930; Iwatsuki & Suzuki 1996)
- =Fissidens linderi P. de la Varde, Rev. Bryol., n.s. 3: 44. 1930. (Pursell 2007a)
- =Fissidens holstii var. perintegrifolius P. de la Varde, Rev. Bryol., n.s. 4: 62. 1931. ≡Fissidens perintegrifolius (P. de la Varde) P. de la Varde, Rev. Bryol. Lichénol. 13: 29. 1942. (Bruggeman-Nannenga 1993)
- =Fissidens rivicola var. gabonensis P. de la Varde, Rev. Bryol., n.s. 4: 64. 1931. (O'Shea 2006)
- =Fissidens taeniocladus P. de la Varde, Rev. Bryol., n.s. 4: 64. 1931. (Pursell 2007a)
- =Fissidens erikssonii E.B. Bartram, Acta Horti Gothob. 18: 270. 1950. (Bartram 1950; Bruggeman-Nannenga 1999)
- =Fissidens subkurandae E.B. Bartram, Farlowia 4: 236. 1952. (Bartram 1952a; Pursell 2007a)
- =Fissidens pictus Bizot, Rev. Bryol. Lichénol. 40(2): 106. 1974. (Pursell 2007a)
- =Fissidens subpictus Bizot, Rev. Bryol. Lichénol. 40(2): 109. 1974. (Pursell 2007a)
- =Fissidens ghanae Bizot, Rev. Bryol. Lichénol. 40: 105. 1974. (Bizot 1974; Pursell 2007a)
- =Fissidens palvadeaui Bizot, Rev. Bryol. Lichénol. 40: 106. 1974. (Bizot 1974; Pursell 2007a)
- =Fissidens cremersii Bizot & Onr., Rev. Bryol. Lichénol. 42: 846. 1976. (Bizot 1976; Pursell 2007a)
- =Fissidens saulensis Pursell & W.R. Buck, Brittonia 48: 27. 1996. (Pursell & Buck 1996; Florschütz-de Waard 2011)
Fissidens pellucidus var. asterodontius (Müll. Hal.) Pursell, Bryologist 97: 262. 1994. (Pursell 1994c; Pursell 2007a)

Basionym: Conomitrium asterodontium Müll. Hal., Syn. Musc. Frond. 2: 527. 1851. (Müller 1851; Pursell 2007a)

≡Fissidens asterodontius (Müll. Hal.) Mitt., J. Linn. Soc., Bot. 12: 587. 1869. (Mitten 1869; Pursell 2007a)
- =Fissidens latifolius Broth., Ergebn. Bot. Exp. Südbras., Musci: 274. 1924, nom. illeg. (Pursell 2007a)
Fissidens pellucidus var. papillifer (Broth.) Pursell, Bryologist 97: 262. 1994. (Pursell 1994c; Pursell 2007a)

Basionym: Fissidens papillifer Broth., Hedwigia 45: 266. 1906. (Brotherus 1906a; Pursell 1994c)
Fissidens pellucidus Hornsch. var. pellucidus
Fissidens pellucinervis Dixon ex E.B. Bartram, Occas. Pap. Bernice Pauahi Bishop Mus. 19(11): 220. 1948. (Bartram 1948; Iwatsuki & Suzuki 1989)
Fissidens perangustus Broth., Proc. Linn. Soc. New South Wales 41: 577. 1916. (Brotherus 1916; Beever 2014)
Fissidens perdecurrens Besch., J. Bot. (Morot) 12: 293. 1898. (Bescherelle 1898b; Iwatsuki & Suzuki 1982)
Fissidens perfalcatus Broth., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 26, Afd. 3(7): 13. 1900. (Brotherus 1900; Pursell 2007a)
- =Fissidens sharpii Pursell, Cryptog. Bryol. Lichénol. 7: 39. 1986. (Pursell 1986; Pursell 2007a)
Fissidens perobtusus Dixon, Proc. Linn. Soc. New South Wales 55: 272. 1930. (Dixon & Greenwood 1930; Iwatsuki & Suzuki 1996)
- =Fissidens traversii I.G. Stone, J. Bryol. 12: 359. 1983. (Stone 1983a; Iwatsuki & Suzuki 1996)
Fissidens perplexans Dixon, Rec. Bot. Surv. India 9: 305. 1926. (Dixon 1926; Chopra & Kumar 1981)
Fissidens persicus R. Ruthe, Verh. K.K. Zool.-Bot. Ges. Wien 20: 591. 1870. (Juratzka & Milde 1870; Kürschner & Frey 2011)
Fissidens perumalensis Dixon & P. de la Varde, Arch. Bot. Bull. Mens. 1(8–9): 163. 1927. (Dixon & Potier de la Varde 1927; Dandotiya et al. 2011)
Fissidens peruvianus Hampe ex Müll. Hal., Linnaea 42: 240. 1879. (Müller 1879b; Menzel 1992)
Fissidens petrophilus Sull., Musci Cub. Wright.: 276. 1861. (Sullivant 1861; Pursell 2007a)
Fissidens plagiothecioides Müll. Hal., Linnaea 42: 241. 1879. (Müller 1879b; Matteri 2003)
Fissidens planifrons Besch., Ann. Sci. Nat., Bot., sér. 7, 2: 85. 1885. (Bescherelle 1885; Bruggeman-Nannenga & Arts 2010)
- =Fissidens ovatus var. planifolius Besch., Ann. Sci. Nat., Bot., sér. 6, 9: 330. 1880. (Bescherelle 1879; O'Shea 2006)
- =Fissidens planifrons var. corticeus Besch., Ann. Sci. Nat., Bot., sér. 7, 2: 86. 1885. (Bruggeman-Nannenga 1997)
- =Fissidens vulcanicus Renauld & Cardot, Bull. Soc. Roy. Bot. Belgique 35(1): 304. 1897. (Bruggeman-Nannenga & Arts 2010)
Fissidens platensis Paris, Index Bryol. Suppl.: 163. 1900. (Paris 1900; Matteri 2003)

Replaced synonym: Fissidens inclinatulus Müll. Hal., Hedwigia 36: 87. 1897, nom. illeg. (Müller 1897e)
Fissidens platyneuros Renauld & Cardot, Bull. Soc. Roy. Bot. Belgique 35(1): 304. 1897. (Renauld & Cardot 1896; Marline et al. 2012)
Fissidens plumosus Hornsch., Linnaea 15: 151. 1841. (Hornschuch 1841; Bruggeman-Nannenga & Arts 2010)
- =Fissidens boryanus Besch., Ann. Sci. Nat., Bot., sér. 6, 9: 331. 1880. (Bescherelle 1879; Bruggeman-Nannenga & Arts 2010)
Fissidens plurisetus E.B. Bartram, Bryologist 42: 153. 1939. (Willis 1939; Pursell 2007a)
Fissidens pocsii Bizot & Dury, Rev. Bryol. Lichénol. 40(2): 135. 1974. (Bizot 1974; Bruggeman-Nannenga & Arts 2010)
Fissidens pokhrensis Nork. ex S.S. Kumar, Misc. Bryol. Lichenol. 8: 120. 1979. (Kumar 1979; Suzuki 2017)
Fissidens polyphyllus Wilson ex Bruch & Schimp., Bryol. Eur. 1: 200. 1851. (Schimper 1851; Hodgetts et al. 2020)

≡Fissidens adianthoides var. polyphyllus (Wilson ex Bruch & Schimp.) Wilson, Bryol. Brit.: 306. 1855. (Wilson 1855) ≡Fissidens asplenioides var. polyphyllus (Wilson ex Bruch & Schimp.) Wilson, Bryol. Brit.: 306. 1855. (Wilson 1855) ≡Fissidens serrulatus var. polyphyllus (Wilson ex Bruch & Schimp.) Boulay ex Bott., Atti Soc. Tosc. Sci. Nat. Pisa Mem. 8: 190. 1887.
- =Fissidens welwitschii Schimp., Syn. Musc. Eur. (ed. 2): 120. 1876, nom. illeg. (Schimper 1876; Wijk et al. 1962) ≡Fissidens polyphylloides Sauerb., Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1877–78: 394. 1880. (Jaeger & Sauerbeck 1879; Wijk et al. 1962) ≡Fissidens lusitanicus Paris, Index Bryol.: 475. 1896, nom. illeg. (Wijk et al. 1962)
- =Fissidens polyphyllus var. newtonii Husn., Muscol. Gall.: 431. 1894. (Husnot 1884–1894; Guerra & Ederra 2015)
- =Fissidens polyphyllus var. welwitschii Luisier, Ann. Sci. Acad. Polytechn. Porto 2: 238. 1907. (Guerra & Ederra 2015)
- =Fissidens polyphyllus var. lusitanicus Luisier, Bróteria, Sér. Bôt. 9: 67. 1910, nom. illeg. (Wijk et al. 1962)
- =Fissidens polyphyllus var. minor Luisier, Bróteria, Sér. Bôt. 16: 133. 1918. (Guerra & Ederra 2015)
- =Fissidens polyphyllus f. britannicus Rhodes ex E. Bauer, Musci Eur. Exsic.: No. 1712. 1924. (Podpěra 1954)
Fissidens polypodioides Hedw., Sp. Musc. Frond.: 154. 1801. (Hedwig 1801; Pursell 2007a)

≡Dicranum polypodioides (Hedw.) F. Weber & D. Mohr, Index Mus. Pl. Crypt.: 2 [recto]. 1803. (Weber & Mohr 1803) ≡Skitophyllum polypodioides (Hedw.) Bach. Pyl., J. Bot. Agric. 4: 153. 1815.
- =Fissidens areolatus Griff., Calcutta J. Nat. Hist. 2: 506. 1842. (Griffith 1842; Tan & Choy 2002) ≡Fissidens polypodioides var. areolatus (Griff.) Wilson, Hooker's J. Bot. Kew Gard. Misc. 9: 294. 1857.
- =Fissidens oerstedianus Müll. Hal., Syn. Musc. Frond. 2: 529. 1851. (Müller 1851; Pursell 2007a)
- =Fissidens divisus Hampe, Ann. Sci. Nat., Bot., sér. 5, 5: 322. 1866. (Pursell 2007a)
- =Fissidens yakushimensis Toyama, Acta Phytotax. Geobot. 4: 216. 1935. (Tan & Choy 2002)
Fissidens polysetulus Müll. Hal. ex Gangulee & Nork., Mosses E. India 2: 525. 1971. (Gangulee 1971; Dandotiya et al. 2011)
Fissidens porrectus Mitt., Trans. Linn. Soc. London 23: 56. 1860. (Mitten 1860; Bruggeman-Nannenga & Arts 2010)
- =Fissidens nitens Rehmann ex E.S. Salmon, Ann. Bot. (Oxford) 13: 121. 1899. (Salmon 1899; Bruggeman-Nannenga & Arts 2010)
- =Fissidens nitens var. neglectus E.S. Salmon, Ann. Bot. (Oxford) 13: 122. 1899. (Salmon 1899; Bruggeman-Nannenga 1993)
- =Fissidens rufolimbatus Cardot, Rev. Bryol. 35: 65. 1908. (Cardot 1908; Bruggeman-Nannenga 1993)
- =Fissidens pachylomoides P. de la Varde, Rev. Bryol., n.s. 4: 57. 1931. (Bruggeman-Nannenga 1993)
- =Fissidens rufolimbatus var. torrentium P. de la Varde, Rev. Bryol., n.s. 4: 59. 1931. (Bruggeman-Nannenga 1993)
- =Fissidens pachylomoides var. subdenticulatus P. de la Varde, Rev. Bryol. Lichénol. 5: 202. 1932. (Potier de la Varde 1932b; Bruggeman-Nannenga 1993)
- =Fissidens rufolimbatus var. latifolius P. de la Varde, Rev. Bryol. Lichénol. 8: 52. 1935. (Potier de la Varde 1935; Bruggeman-Nannenga 1993)
- =Fissidens rufolimbatus var. ramosus P. de la Varde, Rev. Bryol. Lichénol. 8: 52. 1935. (Potier de la Varde 1935; Bruggeman-Nannenga 1993)
- =Fissidens schnellii P. de la Varde, Rev. Bryol. Lichénol. 18: 105. 1949. (Potier de la Varde 1949; Bruggeman-Nannenga 1993)
- =Fissidens woodii J. Taylor & P. de la Varde, Rev. Bryol. Lichénol. 25: 215. 1956. (Potier de la Varde 1956b; Bruggeman-Nannenga 1993)
Fissidens prionocheilos Müll. Hal., Linnaea 42: 245. 1879. (Müller 1879b; Greene 1986)
Fissidens prionodes Mont., Ann. Sci. Nat., Bot., sér. 2, 3: 200. 1835. (Montagne 1835; Pursell 2007a)
- =Fissidens marmellensis Broth., Hedwigia 45: 267. 1906. (Brotherus 1906a; Florschütz-de Waard 2011)
Fissidens protonematicola Sakurai, Bot. Mag. (Tokyo) 47: 741. 1933. (Sakurai 1933; Li 1985)
- =Fissidens gemmaceus Herzog & P. de la Varde, J. Hattori Bot. Lab. 14: 55. 1955. (Herzog & Noguchi 1955; Li et al. 2001)
Fissidens pseudautoicus Tad. Suzuki & Z. Iwats., Hattoria 2: 11. 2011. (Suzuki & Iwatsuki 2011)
Fissidens pseudoaldelphinus Z. Iwats. & Tad. Suzuki, J. Hattori Bot. Lab. 92: 167. 2002. (Iwatsuki & Suzuki 2002)
Fissidens pseudoanomalus Brugg.-Nann. & Frank Müll., Cryptog., Bryol. 41(18): 233. 2020. (Bruggeman-Nannenga & Müller 2020)
Fissidens pseudoceylonensis B.C. Tan & M.S. Choy, J. Bryol. 24: 48. 2002. (Tan & Choy 2002; Suzuki & Iwatsuki 2010)
- =Fissidens punctulatus var. asperellisetus M. Fleisch., Musci Buitenzorg 1: 36. 1904. (Suzuki & Iwatsuki 2011)
Fissidens pseudoclosteri Z. Iwats. & S.S. Kumar, Hikobia 11: 133. 1992. (Iwatsuki & Kumar 1992; Tang et al. 2020)
Fissidens pseudoeenii Bizot & Dury, Rev. Bryol. Lichénol. 40(2): 134. 1974. (Bizot 1974; Bruggeman-Nannenga 2006a)
Fissidens pseudofirmus Z. Iwats., Mem. New York Bot. Gard. 45: 638. 1987. (Iwatsuki 1987)
Fissidens pseudohollianus Z. Iwats. & Tad. Suzuki, J. Hattori Bot. Lab. 51: 384. 1982. (Iwatsuki & Suzuki 1982; Noguchi & Iwatsuki 1987)
Fissidens pseudojavanicus Tad. Suzuki & Z. Iwats., Hattoria 2: 19. 2011. (Suzuki & Iwatsuki 2011)
Fissidens pseudopallidus I.G. Stone, Mem. New York Bot. Gard. 45: 631. 1987. (Stone 1987; Müller et al. 2003)
Fissidens pseudoplumosus Bizot & Onr., Rev. Bryol. Lichénol. 40(2): 109. 1974. (Bizot 1974; Bruggeman-Nannenga & Arts 2010)
Fissidens pseudoplumosus Bizot & Onr. subsp. pseudoplumosus
Fissidens pseudoplumosus subsp. subplanifrons (Bizot & Onr.) Brugg.-Nann. & Arts, J. Bryol. 32(3): 199. 2010. (Bruggeman-Nannenga & Arts 2010)

Basionym: Fissidens subplanifrons Bizot & Onr., Rev. Bryol. Lichénol. 40(2): 136. 1974. (Bizot 1974; Bruggeman-Nannenga & Arts 2010)
Fissidens pseudoplurisetus Bordin, Pursell & O. Yano, Bryologist 114(4): 785. 2011. (Bordin et al. 2011; Bordin & Yano 2013)
Fissidens pseudoscindulatus Brugg.-Nann., Cryptog., Bryol. 43(3): 43. 2022. (Bruggeman-Nannenga 2022b)
Fissidens pugionifolius Müll. Hal., Linnaea 39: 351. 1875. (Müller 1875; O'Shea 2006)
Fissidens pulchellus Mitt., J. Proc. Linn. Soc., Bot., Suppl. 1(2): 140. 1859. (Mitten 1859; Iwatsuki & Suzuki 2005)
- =Fissidens subpulchellus Nork., Mosses E. India 2: 521. 1971. (Gangulee 1971; Iwatsuki & Suzuki 2005)
Fissidens punctulatus Sande Lac., Sp. Nov. Musc. Ind.: 2. 1872. (Sande Lacoste 1872; Bruggeman-Nannenga & Arts 2010)
- =Fissidens ellipticus Besch., Ann. Sci. Nat., Bot., sér. 6, 9: 331. 1880. (Bescherelle 1879; Bruggeman-Nannenga & Arts 2010)
- =Fissidens ligulinus Müll. Hal., Prodr. Fl. Bryol. Madagascar: 114. 1898. (Renauld 1897; Bruggeman-Nannenga & Arts 2010)
- =Fissidens brevilingulatus E.B. Bartram, Occas. Pap. Bernice Pauahi Bishop Mus. 19(11): 221. 1948. (Bartram 1948; Iwatsuki & Suzuki 1996)
- =Fissidens leucocaulis Müll. Hal. ex Bizot, Rev. Bryol. Lichénol. 40: 133. 1974. (Bizot 1974; Bruggeman-Nannenga & Arts 2010)
- =Fissidens longidens Bizot, Rev. Bryol. Lichénol. 40: 134. 1974. (Bruggeman-Nannenga & Arts 2010)
Fissidens pusillus (Wilson) Milde, Bryol. Siles.: 82. 1869. (Milde 1869a; Hodgetts et al. 2020)

Basionym: Fissidens viridulus var. pusillus Wilson, Bryol. Brit.: 303. 1855. (Wilson 1855)

≡Fissidens incurvus var. pusillus (Wilson) Schimp., Syn. Musc. Eur.: 104. 1860. (Schimper 1860) ≡Schistophyllum pusillum (Wilson) Lindb., Musci Scand.: 13. 1879. (Lindberg 1879; Hodgetts et al. 2020) ≡Schistophyllum incurvum subsp. pusillum (Wilson) Lindb., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 7(9): 57. 1883. (Kindberg 1883) ≡Fissidens incurvus subsp. pusillus (Wilson) Boulay, Musc. France, Mousses: 529. 1884. (Boulay 1884) ≡Fissidens minutulus subsp. pusillus (Wilson) Wijk & Margad., Taxon 9: 189. 1960. (Wijk & Margadant 1960) ≡Fissidens bryoides var. pusillus (Wilson) Pursell, Monogr. Syst. Bot. Missouri Bot. Gard. 49: 51. 1994. (Allen 1994)
- =Fissidens viridulus var. lylei Wilson, Bryol. Brit.: 304. 1855. (Wilson 1855) ≡Fissidens incurvus var. lylei (Wilson) Hunt, Mem. Lit. Soc. Manchester ser. 3, 3: 240. 1868. ≡Fissidens pusillus var. lylei (Wilson) Braithw., Brit. Moss Fl. 1: 68. 1881. (Braithwaite 1887-1905; Bruggeman-Nannenga 1982)
- =Fissidens pusillus var. madidus Spruce, J. Bot. 18: 361. 1880. (Spruce 1880; Podpěra 1954)
- =Fissidens pusillus var. irriguus Limpr., Laubm. Deutschl. 1: 437. 1887. (Limpricht 1885–1903; Guerra & Ederra 2015) ≡Fissidens minutulus var. irriguus (Limpr.) Pilous, Čas. Nár. Mus., Odd. Prír. 123: 95. 1960.
Fissidens pusillus var. fallax Limpr., Laubm. Deutschl. 1: 438. 1887. (Limpricht 1885–1903; Ros et al. 2013)

≡Fissidens minutulus var. fallax (Limpr.) Wijk & Margad., Taxon 14: 197. 1965. (Wijk & Margadant 1965)
Fissidens pusillus (Wilson) Milde var. pusillus
Fissidens pycnoglossus Müll. Hal., Linnaea 42: 246. 1879. (Müller 1879b; Matteri 2003)
Fissidens pygmaeus Hornsch., Linnaea 15: 147. 1841. (Hornschuch 1841; Bruggeman-Nannenga & Wigginton 2012)
- =Fissidens stellenboschianus Dixon, Trans. Roy. Soc. South Africa 15: 195. 1926. (Sim 1926; Bruggeman-Nannenga 1997)
- =Fissidens perpaucifolius Dixon, Trans. Roy. Soc. South Africa 15: 196. 1926. (Sim 1926; Magill 1981)
Fissidens radicans Mont., Ann. Sci. Nat., Bot., sér. 2, 14: 345. 1840. (Montagne 1840; Pursell 2007a)

≡Conomitrium radicans (Mont.) Müll. Hal., Syn. Musc. Frond. 2: 526. 1851. (Müller 1851)
- =Fissidens perramosus Broth., Ergebn. Bot. Exp. Südbras., Musci: 275. 1924. (Pursell 2007a)
- =Fissidens santa-clarensis var. obtusifolius Bizot & Thér., Mem. Soc. Cub. Hist. Nat. "Felipe Poey" 13: 210. 1939. (Thériot 1939; Pursell 1994c)
Fissidens raiatensis E.B. Bartram, Occas. Pap. Bernice Pauahi Bishop Mus. 9(16): 5. 1931. (Bartram 1931a; Miller et al. 1978)
Fissidens ramicola Broth., Hedwigia 45: 268. 1906. (Brotherus 1906a; Pursell 2007a)
- =Fissidens pseudomicrocladus Pursell, J. Hattori Bot. Lab. 55: 249. 1984. (Pursell 1984; Pursell 2007a)
Fissidens ramulosus Mitt., Trans. Linn. Soc. London 23: 54. 1860. (Mitten 1860; Bruggeman-Nannenga & Arts 2010)
- =Fissidens angolensis Welw. & Duby, Mém. Soc. Phys. Genève 21: 225. 1872. (Duby 1872; Bruggeman-Nannenga 1997)
- =Fissidens comorensis var. acuminatus Besch., Ann. Sci. Nat., Bot., sér. 6, 9: 330. 1880. (Bescherelle 1879; Bruggeman-Nannenga & Arts 2010)
- =Fissidens sigmocarpus Müll. Hal. ex Dusén, Kongl. Svenska Vetensk. Acad. Handl., n.s. 28(2): 7. 1895. (Dusén 1895; Bruggeman-Nannenga 1997)
- =Fissidens brunnthaleri Broth., Denkschr. Kaiserl. Akad. Wiss., Wien Math.-Naturwiss. Kl. 88: 734. 1913. (Bruggeman-Nannenga 1997)
- =Fissidens brunnthaleri var. filipes Dixon & P. de la Varde, Arch. Bot. Bull. Mens. 4(2): 19. 1930. (Bruggeman-Nannenga 2009a)
- =Fissidens subelimbatus var. crispus P. de la Varde, Rev. Bryol., n.s. 4: 60. 1931. ≡Fissidens bonnotii Bizot, Rev. Bryol. Lichénol. 40(2): 131. 1974. (Bizot 1974; Bruggeman-Nannenga 1997)
Fissidens ranchiensis Gangulee, Bull. Bot. Soc. Bengal 11: 68. 1957[1959]. (Gangulee 1957; Gangulee 1971)
Fissidens ranuii Gangulee, Nova Hedwigia 8: 141. 1964. (Gangulee 1964; Gangulee 1971)
Fissidens reflexus Hampe, Linnaea 38: 221. 1874. (Hampe 1874; Bruggeman-Nannenga 2006a)

≡Conomitrium reflexum (Hampe) A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1874–75: 127. 1876. (Jaeger 1876)
- =Conomitrium desertorum Müll. Hal., Linnaea 39: 368. 1875. (Müller 1875; Bruggeman-Nannenga 2009a) ≡Fissidens desertorum (Müll. Hal.) Paris, Index Bryol.: 466. 1896. (Bruggeman-Nannenga 2009a)
- =Conomitrium inflatum Müll. Hal., Linnaea 39: 375. 1875. (Müller 1875; Bruggeman-Nannenga 1997) ≡Fissidens inflatus (Müll. Hal.) Paris, Index Bryol.: 473. 1896. (Bruggeman-Nannenga 1997)
- =Conomitrium semiobscurum Müll. Hal., Linnaea 39: 376. 1875. (Müller 1875; Bruggeman-Nannenga 1997) ≡Fissidens semiobscurus (Müll. Hal.) Paris, Index Bryol.: 485. 1896. (Bruggeman-Nannenga 1997)
- =Fissidens ventroalaris Cardot, Hist. Phys. Madagascar, Mousses: 162. 1915. (Renauld & Cardot 1915; Bruggeman-Nannenga 1997)
- =Fissidens waterlotii Thér., Recueil Publ. Soc. Havraise Études Diverses 90: 81. 1923. (Thériot 1923; Bruggeman-Nannenga 1997)
- =Fissidens bambariensis Broth. & P. de la Varde, Mouss. Oubangui 1(3): 14. 1928. (Potier de la Varde 1928b; Bruggeman-Nannenga 2009a)
Fissidens reimersii P. de la Varde, Ann. Cryptog. Exot. 3: 46. 1930. (Potier de la Varde 1930; Bruggeman-Nannenga & Wigginton 2012)
Fissidens rigidulus Hook. f. & Wilson, Fl. Nov.-Zel. 2: 61. 1854. (Hooker 1855; Pursell 2007a)
- =Fissidens lechleri Hampe ex Müll. Hal., Bot. Zeitung (Berlin) 22: 340. 1864. (Müller 1864; Pursell 2007a)
- =Fissidens tortuosus Geh. & Hampe, Rev. Bryol. 8: 27. 1881. (Pursell 2007a)
- =Fissidens steyermarkii E.B. Bartram, N. Amer. Fl. 15: 177. 1943. (Grout 1943; Pursell 2007a) ≡Fissidens oediloma subsp. steyermarkii (E.B. Bartram) Brugg.-Nann., Proc. Kon. Ned. Akad. Wetensch., C 82: 14. 1979. (Bruggeman-Nannenga 1979)
- =Fissidens rigidulus subsp. masatierrensis Brugg.-Nann., Proc. Kon. Ned. Akad. Wetensch., C 82: 20. 1979. (Bruggeman-Nannenga 1979; Pursell 2007a)
Fissidens rigidulus subsp. novaguineensis Brugg.-Nann., Proc. Kon. Ned. Akad. Wetensch., C 82: 21. 1979. (Bruggeman-Nannenga 1979; Norris & Koponen 1987)
Fissidens rigidulus var. pseudostrictus J.E. Beever, New Zealand J. Bot. 37: 646. 1999. (Beever & Stone 1999; Beever 2014)
Fissidens rigidulus Hook. f. & Wilson subsp. rigidulus
Fissidens rigidulus Hook. f. & Wilson var. rigidulus
Fissidens rivularis (Spruce) Schimp., Bryol. Eur. 1: 199. 1851. (Schimper 1851; Bruggeman-Nannenga 1985)

Basionym: Fissidens bryoides var. rivularis Spruce, Musci Pyren.: 318. 1847. (Spruce 1847)
Fissidens robynsianus P. de la Varde, Bull. Jard. Bot. État Bruxelles 27: 757. 1957. (Demaret & Potier de la Varde 1957; Bruggeman-Nannenga 2013c)
Fissidens rochensis Broth., Symb. Antill. 3: 421. 1903. (Brotherus 1903; Pursell 2007a)
- =Fissidens jimenezii E.B. Bartram, Publ. Univ. Santo Domingo 92(4): 14. 1954. (Bartram 1954a; Pursell 2007a)
Fissidens rosulatus P. de la Varde, Mém. Soc. Sci. Nat. Math. Cherbourg 43: 65. 1938. (Potier de la Varde 1938; O'Shea 2006)
Fissidens rotereaui P. de la Varde, Mém. Soc. Sci. Nat. Math. Cherbourg 43: 63. 1938. (Potier de la Varde 1938; Bruggeman-Nannenga 2013c)
- =Fissidens schelpei P. de la Varde, Rev. Bryol. Lichénol. 22: 10. 1953. (Potier de la Varde 1953; Bruggeman-Nannenga 2013c)
Fissidens rotundifolius Brugg.-Nann., Cryptog., Bryol. 43(2): 28. 2022. (Bruggeman-Nannenga 2022a; Bruggeman-Nannenga 2022b)
Fissidens rufescens Hornsch., Linnaea 15: 153. 1841. (Hornschuch 1841; Bruggeman-Nannenga 2013c)
- =Fissidens bryoides var. capensis Hornsch., Linnaea 15: 157. 1841. (Hornschuch 1841; O'Shea 2006)
- =Fissidens marginatus Schimp. ex Müll. Hal., Bot. Zeitung (Berlin) 16: 154. 1858. (Müller 1858; Bruggeman-Nannenga 2013c)
- =Fissidens breutelii Schimp. ex Müll. Hal., Bot. Zeitung (Berlin) 17: 198. 1859. (Müller 1859; Bruggeman-Nannenga 2013c)
- =Fissidens ischyrobryoides Müll. Hal., Hedwigia 38: 55. 1899. (Müller 1899; Bruggeman-Nannenga & Pursell 1995)
- =Fissidens minutiretis Dixon, Kongel. Norske Vidensk. Selsk. Skr. (Trondheim) 1932(4): 5. 1932. (Dixon 1932c; Magill 1981)
Fissidens rufinervis Müll. Hal., Hedwigia 39: 240. 1900. (Müller 1900; Yano 1996)
Fissidens rufulus Schimp., Bryol. Eur. 1: 199. 1851. (Schimper 1851; Bruggeman-Nannenga 1982)

≡Fissidens incurvus var. rufulus (Schimp.) Bouvet, Bull. Soc. Études Sci. Angers, n.s. 25: 428. 1896.
- =Fissidens hydrophilus A. Jaeger, Enum. Fissident.: 20. 1869. (Wijk et al. 1962)
- =Fissidens viridulus var. algeriensis Corb., Rev. Bot. Bull. Mens. 7: 149. 1889. (Ros & Cano 2008)
- =Fissidens rufulus f. gracilis J.J. Amann, Beitr. Kryptogamenfl. Schweiz 7(2): 20. 1933. (Podpěra 1954)
- =Fissidens rufulus f. minimus J.J. Amann, Beitr. Kryptogamenfl. Schweiz 7(2): 20. 1933. (Podpěra 1954)
Fissidens rupicola Broth. & Paris, Öfvers. Finska Vetensk.-Soc. Förh. 48(15): 7. 1906. (Brotherus 1906b; Iwatsuki 1982)
Fissidens santa-clarensis Thér., Mem. Soc. Cub. Hist. Nat. "Felipe Poey" 13: 209. 1939. (Thériot 1939; Pursell 2007a)
- =Fissidens allenianus Brugg.-Nann. & Pursell, Bryologist 93: 332. 1990. (Bruggeman-Nannenga & Pursell 1990; Pursell 2007a)
Fissidens saprophilus Broth., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 26, Afd. 3(7): 12. 1900. (Brotherus 1900; Pursell 2007a)
Fissidens scalaris Mitt., J. Linn. Soc., Bot. 12: 596. 1869. (Mitten 1869; Pursell 2007a)
- =Fissidens distichellus Besch., J. Bot. (Morot) 5: 253. 1891. (Pursell 2007a)
- =Fissidens hauthalii Müll. Hal., Hedwigia 36: 88. 1897. (Müller 1897e; Pursell 2007a)
- =Fissidens hauthalii var. angustissimus Müll. Hal., Hedwigia 36: 88. 1897. (Müller 1897e; Pursell 1994c)
- =Fissidens hauthalii var. gracillimus Müll. Hal., Hedwigia 36: 88. 1897. (Müller 1897e; Matteri 2003)
- =Fissidens hauthalii var. minor Müll. Hal., Hedwigia 36: 88. 1897. (Müller 1897e; Pursell 1994c)
- =Fissidens hauthalii var. obtusatulus Müll. Hal., Hedwigia 36: 88. 1897. (Müller 1897e; Pursell 1994c)
- =Fissidens tener Dusén, Ark. Bot. 6(8): 4. 1906. (Dusén 1906; Pursell 2007a)
- =Fissidens felipponei Broth., Contr. Fl. Bryol. Uruguay 1: [9]. 1909. (Felippone 1909; Pursell 2007a)
- =Fissidens antennidens Müll. Hal. ex Broth., Ergebn. Bot. Exp. Südbras., Musci: 273. 1924. (Pursell 2007a)
- =Moenkemeyera neonii E.B. Bartram, Bryologist 34: 77. 1931. (Bartram 1931b; Pursell 2007a) ≡Fissidens neonii (E.B. Bartram) Grout, Moss Fl. N. Amer. 1: 249. 1939. (Grout 1936-1939; Pursell 2007a)
- =Fissidens sehnemii E.B. Bartram, J. Washington Acad. Sci. 42: 178. 1952. (Bartram 1952b; Pursell 2007a)
Fissidens scariosus Mitt., J. Linn. Soc., Bot. 12: 599. 1869. (Mitten 1869; Pursell 2007a)
- =Conomitrium assimile Hampe, Vidensk. Meddel. Dansk Naturhist. Foren. Kjøbenhavn ser. 3, 9–10: 274. 1878. (Pursell 2007a) ≡Fissidens assimilis (Hampe) Paris, Index Bryol.: 460. 1896. (Pursell 2007a)
- =Conomitrium goebelii Müll. Hal., Flora 83: 328. 1897. (Müller 1897d; Pursell 2007a) ≡Fissidens subprosenchymaticus Paris, Index Bryol. Suppl.: 165. 1900. (Pursell 2007a)
- =Conomitrium generalium Müll. Hal., Hedwigia 39: 240. 1900. (Pursell 2007a) ≡Fissidens generalium (Müll. Hal.) Broth., Nat. Pflanzenfam. I(3): 353. 1901. (Pursell 2007a)
- =Conomitrium commutatum Müll. Hal., Hedwigia 39: 241. 1900. (Pursell 2007a) ≡Fissidens commutatus (Müll. Hal.) Broth., Nat. Pflanzenfam. I(3): 353. 1901. (Pursell 2007a)
- =Conomitrium prosenchymaticum Müll. Hal., Hedwigia 39: 241. 1900. (Pursell 2007a) ≡Fissidens prosenchymaticus (Müll. Hal.) Paris, Nat. Pflanzenfam. I(3): 353. 1901. (Pursell 2007a)
Fissidens schusteri Z. Iwats. & P.C. Wu, Beih. Nova Hedwigia 90: 383. 1988. (Iwatsuki & Wu 1988; Li & Iwatsuki 2001)
Fissidens schwabei Nog., J. Hattori Bot. Lab. 14: 58. 1955. (Herzog & Noguchi 1955; Iwatsuki & Suzuki 1982)
Fissidens sciophyllus Mitt., Trans. Linn. Soc. London 23: 55. 1860. (Mitten 1860; Bruggeman-Nannenga & Arts 2010)
- =Fissidens welwitschii Duby, Mém. Soc. Phys. Genève 21: 222. 1872. (Duby 1872; Bruggeman-Nannenga 1997)
- =Conomitrium gumangense Müll. Hal., Linnaea 39: 366. 1875. (Müller 1875; Kis 1985) ≡Fissidens gumangensis (Müll. Hal.) Paris, Index Bryol.: 471. 1896. (Kis 1985)
- =Fissidens comorensis var. sordidus Renauld & Cardot, Bull. Soc. Roy. Bot. Belgique 35(1): 305. 1897. (Bruggeman-Nannenga 1997)
- =Fissidens subobtusatus Müll. Hal., Hedwigia 38: 56. 1899. (Müller 1899; Bruggeman-Nannenga & Arts 2010)
- =Fissidens purpureocaulis Müll. Hal., Gen. Musc. Frond.: 63. 1900. (Müller 1901; Bruggeman-Nannenga 1997)
- =Fissidens lacouturei Thér., Suppl. Prodr. Fl. Bryol. Madagascar: 97. 1909. (Renauld 1909; Bruggeman-Nannenga & Arts 2010)
- =Fissidens filicicola Paris & Broth., Rev. Bryol. 38: 26. 1911. (Paris 1911; Bruggeman-Nannenga 1997)
- =Fissidens crispifolius Broth. & P. de la Varde, Arch. Bot. Bull. Mens. 3(1): 6. 1929. (Potier de la Varde 1929b; Bruggeman-Nannenga 1997)
- =Fissidens arenivagus P. de la Varde, Ann. Cryptog. Exot. 3: 43. 1930. (Potier de la Varde 1930; O'Shea 2006)
- =Fissidens idanreensis P. de la Varde, Trans. Brit. Bryol. Soc. 3(1): 94. 1956. (Potier de la Varde 1956c; Bruggeman-Nannenga 1997)
- =Fissidens arabicus Pursell & Kürschner, Nova Hedwigia 44: 101. 1987. (Pursell & Kürschner 1987; Kürschner 2000)
Fissidens sciophyllus Mitt. f. sciophyllus
Fissidens sciophyllus f. ulna (Müll. Hal.) Brugg.-Nann., J. Hattori Bot. Lab. 81: 167. 1997. (Bruggeman-Nannenga 1997; O'Shea 2006)

Basionym: Conomitrium ulna Müll. Hal., Linnaea 39: 372. 1875. (Müller 1875; Bruggeman-Nannenga 1997)

≡Fissidens ulna (Müll. Hal.) Paris, Index Bryol.: 488. 1896. (Bruggeman-Nannenga 1997)
- =Conomitrium ulna var. jungermannioides Müll. Hal., Linnaea 39: 373. 1875. (Müller 1875; Bruggeman-Nannenga 1997)
- =Fissidens subelimbatus Broth. & P. de la Varde, Bull. Soc. Bot. France 72: 793. 1925. (Bruggeman-Nannenga 1997)
- =Fissidens ulna var. fallax P. de la Varde, Rev. Bryol. Lichénol. 11: 167. 1939. (Potier de la Varde 1939; Bruggeman-Nannenga 1997)
- =Fissidens oligistoloma P. de la Varde, Rev. Bryol. Lichénol. 25: 217. 1956. (Potier de la Varde 1956b; Bruggeman-Nannenga & Arts 2010)
Fissidens scleromitrius (Besch.) Broth., Nat. Pflanzenfam. I(3): 357. 1901. (Brotherus 1901b; Magill 1981)

Basionym: Conomitrium scleromitrium Besch., J. Bot. (Morot) 5: 143. 1891. (Bescherelle 1891a)

≡Moenkemeyera scleromitria (Besch.) P. de la Varde, Arch. Bot. Bull. Mens. 4(2): 21. 1930.
- =Fissidens brevisetus Sim, Trans. Roy. Soc. South Africa 15: 194. 1926. (Sim 1926; Magill 1981)
Fissidens sedgwickii Broth. & Dixon, J. Bot. 48: 305. 1910. (Dixon 1910b; Bruggeman-Nannenga 2019a)
- =Fissidens touwii Tad. Suzuki & Z. Iwats., Hattoria 4: 43. 2013. (Suzuki & Iwatsuki 2013a; Bruggeman-Nannenga 2019a)
Fissidens semicompletus Hedw., Sp. Musc. Frond.: 160. 1801. (Hedwig 1801; Pursell 2007a)

≡Cecalyphum semicompletum (Hedw.) P. Beauv., Prodr. Aethéogam.: 57. 1805. ≡Dicranum semicompletum (Hedw.) D. Mohr, Ann. Bot. (König & Sims) 2: 546. 1806. (Mohr 1806) ≡Skitophyllum semicompletum (Hedw.) Bach. Pyl., J. Bot. Agric. 4(4): 160. 1815. ≡Schistophyllum semicompletum (Hedw.) Lindb., Moss. Dillen. Hist. Musc.: 15. 1883.
- =Octodiceras fissidentoides Brid., Muscol. Recent. Suppl. 1: 162. 1806, nom. illeg. (Bridel 1806)
- =Hypnum cecalyphum Poir., Encycl. Meth. Bot. Suppl. 3(1): 97. 1813, nom. illeg. (Wijk et al. 1964)
- =Skitophyllum dillenii Bach. Pyl., J. Bot. Agric. 4: 161. 1815. (Pursell 2007a) ≡Octodiceras dillenii (Bach. Pyl.) Brid., Bryol. Univ. 2: 67. 1827. (Bridel 1827; Pursell 2007a) ≡Conomitrium dillenii (Bach. Pyl.) Mont., Ann. Sci. Nat., Bot., sér. 2, 8: 250. 1837. (Montagne 1837; Pursell 2007a) ≡Fissidens dillenii (Bach. Pyl.) Hampe, Linnaea 13: 45. 1839. (Pursell 2007a)
- =Conomitrium hedwigii Mont., Ann. Sci. Nat., Bot., sér. 2, 8: 246. 1837, nom. illeg. (Montagne 1837) ≡Fissidens hedwigii Müll. Hal., Syn. Musc. Frond. 1: 45. 1848, nom. illeg. (Müller 1848b) ≡Octodiceras hedwigii Lindb., Öfvers. Kongl. Vetensk.-Akad. Förh. 20: 405. 1863, nom. illeg. (Lindberg 1863)
- =Conomitrium atratum Müll. Hal., Hedwigia 36: 89. 1897. (Müller 1897e; Pursell 2007a) ≡Fissidens atratus (Müll. Hal.) Broth., Nat. Pflanzenfam. I(3): 362. 1901. (Pursell 2007a)
- =Fissidens burelae Herzog, Beih. Bot. Centralbl., Abt. 2, 27(2): 350. 1910. (Herzog 1910a; Pursell 2007a)
Fissidens semperfalcatus Dixon, J. Siam Soc., Nat. Hist. Suppl. 10: 2. 1935. (Dixon 1935b; Suzuki & Iwatsuki 2013b)
Fissidens serratomarginatus Müll. Hal., Gen. Musc. Frond.: 68. 1900, nom. dub. (Müller 1901; Streimann & Curnow 1989)
Fissidens serratus Müll. Hal., Bot. Zeitung (Berlin) 5: 804. 1847. (Müller 1847b; Pursell 2007a)

≡Conomitrium serratum (Müll. Hal.) Müll. Hal., Syn. Musc. Frond. 2: 527. 1851. (Müller 1851)
- =Fissidens dimorphus Müll. Hal., Syn. Musc. Frond. 2: 533. 1851. (Müller 1851; Pursell 2007a)
- =Conomitrium pseudoserratum Müll. Hal., Bot. Zeitung (Berlin) 17: 197. 1859. (Müller 1859; Pursell 2007a) ≡Fissidens pseudoserratus (Müll. Hal.) A. Jaeger, Enum. Fissident.: 24. 1869. (Pursell 2007a)
- =Conomitrium wilsonii Müll. Hal., Bot. Zeitung (Berlin) 17: 197. 1859. (Müller 1859; Pursell 2007a) ≡Fissidens wilsonii (Müll. Hal.) Mont. ex Paris, Index Bryol.: 489. 1896. (Eddy 1988)
- =Fissidens donnellii Austin, Bot. Gaz. 4: 151. 1879. (Pursell 2007a)
- =Conomitrium trachelymum Sull., Linnaea 42: 466. 1879. (Müller 1879c; Pursell 2007a) ≡Fissidens trachelyma (Sull.) Broth., Nat. Pflanzenfam. I(3): 357. 1901. (Pursell 2007a)
- =Conomitrium puiggarii Geh. & Hampe, Vidensk. Meddel. Dansk Naturhist. Foren. Kjøbenhavn ser. 4, 1–2: 161. 1879. (Florschütz-de Waard 2011) ≡Fissidens puiggarii (Geh. & Hampe) Paris, Index Bryol.: 482. 1896. (Florschütz-de Waard 2011) ≡Fissidens prionodes f. puiggarii (Geh. & Hampe) Florsch., Fl. Suriname 6(1): 63. 1964. (Florschütz 1964)
- =Fissidens tenerrimus Müll. Hal., Contr. Fl. Bryol. Brésil: 10. 1891. (Brotherus 1891; Pursell 2007a) ≡Conomitrium tenerrimum (Müll. Hal.) Müll. Hal., Gen. Musc. Frond.: 76. 1900, nom. illeg. (Müller 1901; Pursell 2007a)
- =Fissidens exasperatus Renauld & Cardot, Rev. Bot. Bull. Mens. 10: 659. 1892. (Renauld 1892; Bruggeman-Nannenga & Arts 2010)
- =Fissidens secundulus Müll. Hal., Flora 83: 327. 1897. (Churchill et al. 2000)
- =Conomitrium trichopodium Müll. Hal., Hedwigia 39: 243. 1900. (Pursell 2007a) ≡Fissidens trichopodius (Müll. Hal.) Broth., Nat. Pflanzenfam. I(3): 357. 1901. (Pursell 2007a)
- =Fissidens iporanganus Besch. & Geh., Rev. Bryol. 28: 63. 1901. (Pursell 2007a)
- =Fissidens crenatoserrulatus Cardot, Rev. Bryol. 36: 70. 1909. (Cardot 1909b; Pursell 2007a)
- =Fissidens leratii Broth. & Paris, Öfvers. Finska Vetensk.-Soc. Förh. 51A(17): 8. 1909. (Thouvenot & Bardat 2010)
- =Fissidens perangustifolius Broth. & Paris, Öfvers. Finska Vetensk.-Soc. Förh. 51A(17): 8. 1909. (Pursell 2007a)
- =Fissidens sparsus Broth. & Paris, Öfvers. Finska Vetensk.-Soc. Förh. 53A(11): 10. 1911. (Pursell 2007a)
- =Fissidens tocoraniensis Herzog, Biblioth. Bot. 88: 5. 1920. (Herzog 1921; Pursell 2007a)
- =Fissidens vardei Thér., Mem. Soc. Cub. Hist. Nat. "Felipe Poey" 13: 208. 1939. (Thériot 1939; Pursell 2007a)
- =Fissidens echinellus Herzog, Rev. Bryol. Lichénol. 23: 68. 1954. (Herzog 1954; Pursell 2007a)
- =Fissidens verruculosus Shin, Sci. Rep. Kagoshima Univ. 13: 81. 1964. (Shin 1964; Pursell 2007a)
- =Fissidens eenii Bizot, Svensk Bot. Tidskr. 62: 473. 1968. (Bizot 1968a; Pursell 2007a)
- =Fissidens subexasperatus Bizot & Dury, Rev. Bryol. Lichénol. 40: 135. 1974. (Bizot 1974; Pursell 2007a)
- =Fissidens buckii Pursell, Bryologist 88: 74. 1985. (Pursell 1985a; Pursell 2007a)
Fissidens serrulatus Brid., Muscol. Recent. Suppl. 1: 170. 1806. (Bridel 1806–1817; Hodgetts et al. 2020)

≡Fissidens asplenioides var. serrulatus (Brid.) Wilson, Bryol. Brit.: 306. 1855. (Wilson 1855) ≡Schistophyllum serrulatum (Brid.) Kindb., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 7(9): 56. 1883. (Kindberg 1883)
- =Fissidens bryoides var. giganteus Brid., Bryol. Univ. 2: 688. 1827. (Bridel 1827; Düll 1995)
- =Fissidens langei De Not., Atti Reale Univ. Genova 1: 479. 1869. (Wijk et al. 1969) ≡Fissidens serrulatus f. langei (De Not.) Bott., Rich. Briol. Isola Elba: 25. 1886. (Bottini 1886)
- =Fissidens serrulatus var. africanus Besch., Cat. Mouss. Algérie: 7. 1882. (Sérgio et al. 1997)
- =Fissidens serrulatus var. henriquesii Luisier, Ann. Sci. Acad. Polytechn. Porto 2: 238. 1907. (Sérgio & Carvalho 2003)
- =Fissidens luiserii P. de la Varde, Mitt. Thüring. Bot. Ges. 1(2/3): 15. 1955. (Potier de la Varde 1955b; Werner et al. 2009)
Fissidens seychellensis Dury & Onr., Rev. Bryol. Lichénol. 42: 854. 1976. (Bizot 1976; Bruggeman-Nannenga 1999)
Fissidens shandongensis Z.J. Ren, N.N. Yu & Z.T. Zhao, Chenia 14: 95. 2020. (Ren et al. 2020)
Fissidens shiinae Tad. Suzuki & Z. Iwats., Hattoria 4: 57. 2013. (Suzuki & Iwatsuki 2013b)
Fissidens socialis Müll. Hal., Linnaea 36: 31. 1869. (Müller 1870; O'Shea 2002)
Fissidens soldanianus Tad. Suzuki & Z. Iwats., J. Hattori Bot. Lab. 100: 465. 2006. (Suzuki & Iwatsuki 2006; He & Nguyen 2012)
Fissidens somaliae Müll. Hal., Linnaea 40: 289. 1876. (Müller 1876; Bruggeman-Nannenga 1997)
- =Fissidens corrugatulus Dixon, S. African J. Sci. 18: 307. 1922. (Sim & Dixon 1922; Bruggeman-Nannenga 1997)
Fissidens splachnifolius Hornsch., Linnaea 15: 145. 1841. (Hornschuch 1841; Magill 1981)

≡Conomitrium splachnifolium (Hornsch.) Müll. Hal., Syn. Musc. Frond. 2: 525. 1851. (Müller 1851)
- =Fissidens arnellii P. de la Varde, Rev. Bryol. Lichénol. 23: 266. 1954. (Potier de la Varde 1954; Magill 1981)
Fissidens splendens Brugg.-Nann., Proc. Kon. Ned. Akad. Wetensch., C 81: 249. 1978. (Bruggeman-Nannenga 1978a; Enroth et al. 2013)
Fissidens spuriolimbatus Broth., Hedwigia 34: 121. 1895. (Brotherus 1895b; Pursell 2007a)
Fissidens steerei Grout, N. Amer. Fl. 15: 191. 1943. (Grout 1943; Pursell 2007a)
Fissidens stenophyllus Ångstr., Öfvers. Kongl. Vetensk.-Akad. Förh. 33(4): 47. 1876. (Ångström 1876; Pursell 2007a)
Fissidens stenopteryx Besch., Rev. Bryol. 18: 50. 1891. (Bescherelle 1891c; Pursell 2007a)
Fissidens stolonaceus Müll. Hal., Linnaea 42: 244. 1879. (Müller 1879b; Matteri 2003)
Fissidens streimannii Tad. Suzuki & Z. Iwats., Hattoria 2: 12. 2011. (Suzuki & Iwatsuki 2011)
Fissidens strictidens Brugg.-Nann. & Frank Müll., Cryptog., Bryol. 41(18): 230. 2020. (Bruggeman-Nannenga & Müller 2020)
Fissidens strictus Hook. f. & Wilson, Fl. Tasman. 2: 167. 1859. (Hooker 1860; Beever 2014)
Fissidens subangustus M. Fleisch., Musci Buitenzorg 1: 47. 1904. (Fleischer 1904; Tang et al. 2020)
Fissidens subbasilaris Hedw., Sp. Musc. Frond.: 155. 1801. (Hedwig 1801; Pursell 2007a)

≡Dicranum subbasilare (Hedw.) D. Mohr, Ann. Bot. (König & Sims) 2: 546. 1806. (Mohr 1806) ≡Skitophyllum subbasilare (Hedw.) Bach. Pyl., J. Bot. Agric. 4: 168. 1815.
Fissidens subbryoides Gangulee, Nova Hedwigia 8: 139. 1964. (Gangulee 1964; Gangulee 1971)
Fissidens subdiscolor Dixon, Bull. Torrey Bot. Club 51: 228. 1924. (Dixon 1924; Iwatsuki & Mohamed 1987)
Fissidens sublimbatus Grout, Moss Fl. N. Amer. 1: 13. 1936. (Grout 1936-1939; Pursell 2007a)
- =Fissidens exiguus f. emarginatus Grout, Moss Fl. N. Amer. 1: 15. 1936. (Pursell 1997a)
- =Fissidens obtusifolius var. apiculatus Grout, Moss Fl. N. Amer. 1: 16. 1936. (Grout 1936-1939; Pursell 1997a)
Fissidens sublineifolius (P. de la Varde) Brugg.-Nann., Proc. Kon. Ned. Akad. Wetensch., C 85: 96. 1982. (Bruggeman-Nannenga 1982; Hodgetts et al. 2020)

Basionym: Fissidens warnstorfii var. sublineifolius P. de la Varde, Rev. Bryol. Lichénol. 15: 41. 1945. (Potier de la Varde 1945b)

≡Fissidens crassipes f. sublineifolius (P. de la Varde) Podp., Consp. Musc. Eur.: 82. 1954.
Fissidens submarginatus Bruch, Flora 29: 133. 1846. (Bruch 1846; Bruggeman-Nannenga & Arts 2010)
- =Fissidens semimarginatus Müll. Hal., Bot. Zeitung (Berlin) 5: 38. 1847. (Müller 1847a; Churchill et al. 2000)
- =Fissidens intermedius Müll. Hal., Linnaea 21: 181. 1848. (Müller 1848a; Florschütz-de Waard 2011)
- =Fissidens splitgerberianus Dozy & Molk., Natuurk. Verh. Holl. Maatsch. Wetensch. Haarlem, ser. 2, 10(3): 4. 1854. (Dozy & Molkenboer 1854a; Pursell 2007a)
- =Conomitrium semilimbatum Schlieph., Bot. Zeitung (Berlin) 13: 423. 1855. (Schliephacke 1855; Pursell 1997b) ≡Fissidens semilimbatus (Schlieph.) Spruce, Cat. Musc.: 8. 1867, nom. illeg. (Spruce 1867) ≡Fissidens pabstii A. Jaeger, Enum. Fissident.: 23. 1869. (Jaeger 1869; Pursell 1997b) ≡Fissidens schliephackei Broth., Hedwigia 34: 120. 1895, nom. illeg. (Brotherus 1895b; Pursell 1997b)
- =Conomitrium psatyrocheilon Schlieph., Bot. Zeitung (Berlin) 13: 424. 1855. (Schliephacke 1855; Pursell 2007a) ≡Fissidens psatyrocheilon (Schlieph.) Mitt., J. Linn. Soc., Bot. 12: 597. 1869. (Mitten 1869; Pursell 2007a)
- =Fissidens moritzianus Müll. Hal., Bot. Zeitung (Berlin) 22: 340. 1864. (Müller 1864; Pursell 2007a)
- =Conomitrium palustre Müll. Hal., Bot. Jahrb. Syst. 5: 88. 1883. (Müller 1883; Bruggeman-Nannenga 1997) ≡Fissidens paluster (Müll. Hal.) Paris, Index Bryol.: 479. 1896. (Bruggeman-Nannenga 1997)
- =Conomitrium inclinatulum Müll. Hal., Flora 69: 503. 1886. (Müller 1886; Bruggeman-Nannenga 1997) ≡Fissidens inclinatulus (Müll. Hal.) Paris, Index Bryol.: 472. 1896. (Bruggeman-Nannenga 1997)
- =Fissidens buettneri Broth., Bot. Jahrb. Syst. 20: 181. 1894. (Brotherus 1894; Bruggeman-Nannenga 1997)
- =Fissidens maclaudii Paris & Broth., Rev. Bryol. 30: 101. 1903. (Bruggeman-Nannenga 1997)
- =Fissidens submicropyxis Broth., Hedwigia 45: 266. 1906. (Brotherus 1906a; Pursell 2007a)
- =Fissidens mathieui Cardot, Rev. Bryol. 35: 64. 1908. (Cardot 1908; Bruggeman-Nannenga 1997)
- =Fissidens eschowensis Broth. & Bryhn, Forh. Vidensk.-Selsk. Kristiania 1911(4): 8. 1911. (Magill 1981)
- =Fissidens altolimbatus Broth., Rev. Bryol. 47: 4. 1920. (Brotherus 1920a; Pursell 2007a)
- =Fissidens papillifolius Dixon, Trans. Roy. Soc. South Africa 8: 187. 1920. (Dixon 1920; Magill 1981)
- =Fissidens hillieri Thér., Recueil Publ. Soc. Havraise Études Diverses 93: 44. 1926. (Thériot 1926a; Bruggeman-Nannenga & Arts 2010)
- =Fissidens urceolatus Wager & Dixon, Trans. Roy. Soc. South Africa 15: 194. 1926. (Sim 1926; Magill 1981)
- =Fissidens perparviretis Dixon, Kongel. Norske Vidensk. Selsk. Forh. 9: 35. 1936. (Dixon 1936; Bruggeman-Nannenga 1997)
- =Fissidens cambewarrae Dixon, Proc. Roy. Soc. Queensland 53(2): 24. 1941. (Dixon 1942b; Seppelt & Stone 2016)
- =Fissidens brenanii P. de la Varde, Trans. Brit. Bryol. Soc. 3(1): 92. 1956. (Potier de la Varde 1956c; Bruggeman-Nannenga 1997)
- =Fissidens imshaugii H.A. Crum, Bryologist 63: 93. 1960. (Crum 1960; Pursell 2007a)
- =Fissidens kochii H.A. Crum & L.E. Anderson, Bryologist 64: 345. 1962. (Crum & Anderson 1962; Pursell 2007a)
- =Fissidens jovet-astiae Bizot, Rev. Bryol. Lichénol. 40: 133. 1974. (Bizot 1974; Bruggeman-Nannenga 1997)
- =Fissidens pierrotii Bizot, Rev. Bryol. Lichénol. 40: 135. 1974. (Bizot 1974; Bruggeman-Nannenga 1997)
- =Fissidens subambiguus Bizot & Dury, Rev. Bryol. Lichénol. 40: 136. 1974. (Bizot 1974; Bruggeman-Nannenga 1997)
Fissidens subnutans Müll. Hal., Hedwigia 39: 239. 1900. (Müller 1900; Yano 2011)
Fissidens subobtusus Dixon, Results Norweg. Sci. Exped. Tristan da Cunha 48: 11. 1960. (Dixon 1960)
Fissidens subpalmatus Müll. Hal., Linnaea 37: 164. 1873[1872]. (Müller 1872b; Gangulee 1971)

≡Conomitrium subpalmatum (Müll. Hal.) A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1874–75: 125. 1876. (Jaeger 1876)
Fissidens subradicans Broth., Hedwigia 34: 121. 1895. (Brotherus 1895b; Pursell 2007a)
- =Fissidens rubiginosulus Broth., Hedwigia 45: 266. 1906. (Brotherus 1906a; Pursell 2007a)
Fissidens subramicola Broth., Hedwigia 45: 268. 1906. (Brotherus 1906a; Pursell 2007a)
- =Fissidens austroamericanus Pursell & W.D. Reese, Brittonia 37: 355. 1985. (Pursell & Reese 1985; Florschütz-de Waard 2011)
Fissidens subscleromitrius Bizot & Dury, Rev. Bryol. Lichénol. 42: 845. 1976. (Bizot 1976; O'Shea 2006)
Fissidens subsessilis P.C. Chen, Contr. Inst. Biol. Natl. Centr. Univ. 1: 1. 1943. (Chen 1943; Li 1985)
Fissidens subulatifolius (Müll. Hal.) Paris, Index Bryol. Suppl.: 165. 1900. (Paris 1900; O'Shea 2010)

Basionym: Conomitrium subulatifolium Müll. Hal., Flora 83: 328. 1897. (Müller 1897d)
Fissidens subulatus Mitt., J. Linn. Soc., Bot. 12: 589. 1869. (Mitten 1869; Pursell 2007a)

≡Conomitrium subulatum (Mitt.) A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1874–75: 127 (Gen. Sp. Musc. 2: 43). 1876. (Jaeger 1876)
- =Fissidens validicostatus Sull., Linnaea 42: 465. 1879. (Müller 1879c; Churchill et al. 2000)
Fissidens subundatus Dury, Rev. Bryol. Lichénol. 42: 854. 1976. (Bizot 1976; O'Shea 2006)
Fissidens sufflatus I.G. Stone, Mem. New York Bot. Gard. 45: 627. 1987. (Stone 1987; Bruggeman-Nannenga et al. 1994)
Fissidens surumuensis Irmsch., Notizbl. Bot. Gart. Berlin-Dahlem 7: 534. 1921. (Irmscher 1921; Yano 2011)
Fissidens synoicus Müll. Hal., Linnaea 42: 240. 1879, nom. illeg. (Müller 1879b; Greene 1986)
Fissidens taiarapuensis H. Whittier & H.A. Mill., Bryologist 70: 85. 1967. (Whittier & Miller 1967; Miller et al. 1978)
Fissidens takayukii Tad. Suzuki, Hattoria 6: 8. 2015. (Suzuki 2015; Suzuki 2016)
Fissidens tamaspocsii Brugg.-Nann., Lindbergia 36: 9. 2013. (Bruggeman-Nannenga 2013a)
Fissidens tapes Paris & Broth., Rev. Bryol. 28: 124. 1901. (Paris 1901; Tan & Iwatsuki 1993)
Fissidens taxifolius Hedw., Sp. Musc. Frond.: 155. 1801. (Hedwig 1801; Pursell 2007a)

≡Hypnum taxifolium (Hedw.) With., Syst. Arr. Brit. Pl. (ed. 4) 3: 828. 1801. (Withering 1801) ≡Dicranum taxifolium (Hedw.) F. Weber & D. Mohr, Index Mus. Pl. Crypt.: 2 [recto]. 1803. (Weber & Mohr 1803) ≡Skitophyllum taxifolium (Hedw.) Bach. Pyl., J. Bot. Agric. 4: 166. 1815. ≡Dicranodon taxifolium (Hedw.) Béhéré, Séance Publique Soc. Libre Émul. Rouen 1826: 100. 1826. ≡Schistophyllum taxifolium (Hedw.) Lindb., Musci Scand.: 13. 1879. (Lindberg 1879)
- =Fissidens bonvaleti Schimp. & Paris, Bryoth. Eur. 19: n. 1867. (Ros et al. 1999) ≡Fissidens taxifolius var. bonvaletti (Schimp. & Paris) Besch., Cat. Mouss. Algérie: 7. 1882.
- =Fissidens pallidicaulis Mitt., Nat. Hist. Azores: 314. 1870. (Mitten 1870; Hill et al. 2006) ≡Fissidens taxifolius var. pallidicaulis (Mitt.) Corb., Mém. Soc. Bot. France 7: 9. 1907. ≡Fissidens taxifolius subsp. pallidicaulis (Mitt.) P. de la Varde, Rev. Bryol. Lichénol. 15: 31. 1945. (Potier de la Varde 1945a; Hodgetts et al. 2020)
- =Fissidens taxifolius f. mucronatus Limpr., Laubm. Deutschl. 1: 454. 1887. (Podpěra 1954)
- =Fissidens taxifolius var. langloisii Renauld & Cardot, Rev. Bryol. 19: 78. 1892. (Renauld & Cardot 1892; Crum & Anderson 1981)
- =Fissidens excedens Broth., Rec. Bot. Surv. India 1: 315. 1899. (Brotherus 1899b; Wongkuna et al. 2009)
- =Fissidens taxifolius var. tenuis Bott., Bull. Soc. Bot. Ital. 1902: 178. 1902. (Podpěra 1954)
- =Fissidens adelphinus var. submucronatus Cardot, Bull. Herb. Boissier, sér. 2, 7: 716. 1907. (Cardot 1907; Iwatsuki & Suzuki 1982)
- =Fissidens pallidicaulis var. major Luisier, Bróteria, Sér. Bôt. 9: 58. 1910. (Sérgio et al. 2006)
- =Fissidens taxifolius var. parvulus R. Ruthe ex Röll, Hedwigia 56: 217. 1915. (Podpěra 1954)
- =Fissidens barretoi Dixon & Luisier, Bróteria, Sér. Bôt. 24: 42. 1930. (Hill et al. 2006)
- =Fissidens nipponensis Sakurai, Bot. Mag. (Tokyo) 47: 743. 1933. (Noguchi & Iwatsuki 1987)
- =Fissidens okinawaensis E.B. Bartram, Bryologist 50: 160. 1947. (Bartram 1947a; Noguchi & Iwatsuki 1987)
- =Fissidens clebschii Steere, Bryologist 53: 129. 1950. (Steere 1950; Flora of North America Editorial Committee 2007)
- =Fissidens pallidulus Hampe ex Gangulee, Bull. Bot. Soc. Bengal 11: 82. 1957[1959]. (Gangulee 1957; Gangulee 1971) ≡Fissidens taxifolius f. pallidulus (Hampe ex Gangulee) Nork., Mosses E. India 2: 544. 1971. (Gangulee 1971)
Fissidens taxifolius var. auriculatus (Müll. Hal.) A.E.D. Daniels & P. Daniel, Bryofl. S.-most W. Ghats, India: 50. 2013. (Daniels & Daniel 2013)

Basionym: Fissidens auriculatus Müll. Hal., Linnaea 37: 166. 1873[1872]. (Müller 1872b; Daniels & Daniel 2013)

≡Fissidens sylvaticus var. auriculatus (Müll. Hal.) Gangulee, Mosses E. India 2: 540. 1971. (Gangulee 1971)
- =Fissidens auriculatus var. aquaticus Müll. Hal., Linnaea 37: 167. 1873[1872]. (Müller 1872b)
Fissidens taxifolius var. calcuttensis (Gangulee) A.E.D. Daniels & P. Daniel, Bryofl. S.-most W. Ghats, India: 50. 2013. (Daniels & Daniel 2013)

Basionym: Fissidens sylvaticus var. calcuttensis Gangulee, Mosses E. India 2: 538. 1971. (Gangulee 1971)
Fissidens taxifolius Hedw. var. taxifolius
Fissidens taxifolius var. teraicola (Müll. Hal.) A.E.D. Daniels & P. Daniel, Bryofl. S.-most W. Ghats, India: 51. 2013. (Daniels & Daniel 2013)

Basionym: Fissidens teraicola Müll. Hal., Linnaea 37: 164. 1873[1872]. (Müller 1872b; Daniels & Daniel 2013)

≡Fissidens sylvaticus var. teraicola (Müll. Hal.) Gangulee, Mosses E. India 2: 539. 1971. (Gangulee 1971)
Fissidens taylorii Müll. Hal., Syn. Musc. Frond. 1: 65. 1848. (Müller 1848b; Pursell 2007a)

Replaced synonym: Fissidens pygmaeus Taylor, London J. Bot. 5: 66. 1846, nom. illeg. (Taylor 1846)
- =Fissidens basilaris Müll. Hal. & Hampe, Linnaea 26: 501. 1853[1855]. (Stone & Beever 1996)
- =Fissidens geheebii Müll. Hal., Linnaea 42: 242. 1879. (Müller 1879b; Pursell 2007a)
- =Fissidens ramiger Beckett, Trans. & Proc. New Zealand Inst. 25: 294. 1893. (Stone & Beever 1996)
- =Anacalypta stevensii R. Br. bis, Trans. & Proc. New Zealand Inst. 30: 413. 1898. (Wijk et al. 1959) ≡Pottia stevensii (R. Br. bis) Paris, Index Bryol. Suppl.: 284. 1900, nom. illeg. (Wijk et al. 1959)
- =Fissidens paraguensis Broth., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 26, Afd. 3(7): 11. 1900, nom. illeg. (Brotherus 1900; Pursell 2007a)
- =Pottia parisii Warnst., Hedwigia 58: 58. 1916. (Wijk et al. 1967)
- =Fissidens caespitulosus Müll. Hal. ex Broth., Ergebn. Bot. Exp. Südbras., Musci: 272. 1924. (Pursell 2007a)
- =Fissidens pseudoexilis Thér., Smithsonian Misc. Collect. 78(2): 13. 1926. (Thériot 1926b; Pursell 2007a)
Fissidens taylorii var. epiphytus (Allison) I.G. Stone & J.E. Beever, J. Bryol. 19: 57. 1996. (Stone & Beever 1996; Beever 2014)

Basionym: Fissidens epiphytus Allison, Trans. Roy. Soc. New Zealand 88: 10. 1960. (Allison 1960; Stone & Beever 1996)
Fissidens taylorii var. floribundus (Wilson) Wijk & Margad., Taxon 8: 106. 1959, nom. dub. (Wijk & Margadant 1959; Stone & Beever 1996)

Basionym: Fissidens brevifolius var. floribundus Wilson, Fl. Tasman. 2: 167. 1859. (Hooker 1860)
Fissidens taylorii var. gillianus (Catches. & I.G. Stone) I.G. Stone, J. Bryol. 19: 51. 1996. (Stone & Beever 1996; Streimann & Klazenga 2002)

Basionym: Fissidens gillianus Catches. & I.G. Stone, J. Adelaide Bot. Gard. 11: 5. 1988. (Catcheside & Stone 1988; Stone & Beever 1996)
Fissidens taylorii var. sainsburyanus J.E. Beever, Fl. New Zealand - Mosses 8: 1. 2014. (Beever 2014)
- =Fissidens brevifolius Hook. f. & Wilson, Fl. Nov.-Zel. 2: 61. 1854. (Beever 2014)
- =Fissidens elamellosus Müll. Hal. & Hampe, Linnaea 28: 214. 1856. (Hampe & Müller 1856; Seppelt & Stone 2016)
- =Fissidens macrodus Hampe, Linnaea 30: 645. 1860. (Hampe 1860; Seppelt & Stone 2016)
- =Sainsburia novae-zealandiae Dixon, Bryologist 44: 40. 1941. (Dixon 1941; Beever 2014)
Fissidens taylorii Müll. Hal. var. taylorii
Fissidens tenellus Hook. f. & Wilson, Fl. Nov.-Zel. 2: 62. 1854. (Hooker 1855; Suzuki & Iwatsuki 2012)
- =Fissidens papillosus Sande Lac., Sp. Nov. Musc. Ind.: 1. 1872. (Sande Lacoste 1872; Stone 1994b)
- =Fissidens subtenellus Broth. & Watts, Proc. Linn. Soc. New South Wales 40: 367. 1915. (Brotherus & Watts 1915b; Stone 1994b)
- =Fissidens tenelliformis Broth. & Watts, Proc. Linn. Soc. New South Wales 40: 367. 1915. (Brotherus & Watts 1915b; Stone 1994b)
Fissidens tenellus var. australiensis (A. Jaeger) J.E. Beever & I.G. Stone, New Zealand J. Bot. 37: 651. 1999. (Beever & Stone 1999)

Basionym: Fissidens australiensis A. Jaeger, Enum. Fissident.: 24. 1869. (Beever & Stone 1999)

≡Conomitrium perpusillum Müll. Hal. & Hampe, Linnaea 28: 214. 1856. (Hampe & Müller 1856; Beever & Stone 1999) ≡Fissidens perpusillus (Müll. Hal. & Hampe) Mitt., Trans. & Proc. Roy. Soc. Victoria 19: 92. 1882, nom. illeg. (Mitten 1883; Beever & Stone 1999)
Fissidens tenellus var. leptochaete (Dusén) J.E. Beever & I.G. Stone, New Zealand J. Bot. 37: 651. 1999. (Beever & Stone 1999)

Basionym: Fissidens leptochaete Dusén, Ark. Bot. 6(8): 5. 1906. (Dusén 1906; Beever & Stone 1999)

≡Fissidens serratus var. leptochaete (Dusén) Brugg.-Nann. & Pursell, Lindbergia 20: 53. 1995[1996]. (Bruggeman-Nannenga & Pursell 1995)
- =Fissidens florschuetzii Pursell, Lindbergia 11: 147. 1986. (Pursell 1985b; Pursell 2007a)
Fissidens tenellus Hook. f. & Wilson var. tenellus
Fissidens teniolatus Dixon & P. de la Varde, Ann. Cryptog. Exot. 3(4): 169. 1930. (Dixon & Potier de la Varde 1930)
Fissidens terebrifolius Müll. Hal., Hedwigia 36: 86. 1897. (Müller 1897e; Matteri 2003)
Fissidens terricola Irmsch., Notizbl. Bot. Gart. Berlin-Dahlem 7: 535. 1921, nom. dub. (Irmscher 1921; Pursell 2007a)
Fissidens teysmannianus Dozy & Molk., Pl. Jungh.: 317. 1854. (Dozy & Molkenboer 1854b; Iwatsuki & Mohamed 1987)
- =Fissidens adelphinus Besch., Ann. Sci. Nat., Bot., sér. 7, 17: 334. 1893. (Li et al. 2001)
- =Fissidens fauriei Cardot, Bull. Herb. Boissier, sér. 2, 7: 715. 1907. (Cardot 1907; Li et al. 2001)
- =Fissidens nankingensis Broth. & Paris, Rev. Bryol. 37: 1. 1910. (Paris 1910; Li et al. 2001)
- =Fissidens ferriei Broth., Öfvers. Finska Vetensk.-Soc. Förh. 62A(9): 6. 1921. (Li et al. 2001)
Fissidens thorsbornei (I.G. Stone) Brugg.-Nann., Syst. Stud. Fissidens: 158. 1988. (Bruggeman-Nannenga 1988; Downing et al. 2014)

Basionym: Nanobryum thorsbornei I.G. Stone, J. Bryol. 12: 199. 1982. (Stone 1982)
Fissidens thwaitesii Paris, Actes Soc. Linn. Bordeaux 49(3): 164. 1895. (Paris 1895; Suzuki & Iwatsuki 2013b)

Replaced synonym: Fissidens papillosus Thwaites & Mitt., J. Linn. Soc., Bot. 13: 323. 1873, nom. illeg. (Mitten 1873b)

≡Fissidens thwaitesianus Paris, Index Bryol.: 479. 1896, nom. illeg.
Fissidens tonkinensis Paris & Broth., Rev. Bryol. 33: 54. 1906. (Paris 1906; Tan & Iwatsuki 1993)
Fissidens tosaensis Broth., Öfvers. Finska Vetensk.-Soc. Förh. 62A(9): 5. 1921. (Brotherus 1921; Iwatsuki & Suzuki 1982)
- =Fissidens heterolimbatus Sakurai, Bot. Mag. (Tokyo) 47: 736. 1933. (Li et al. 2001)
- =Fissidens reimersii Sakurai, Bot. Mag. (Tokyo) 47: 737. 1933, nom. illeg. (Noguchi & Iwatsuki 1987) ≡Fissidens nanellus Sakurai, Muscol. Jap.: 23. 1954. (Sakurai 1954; Noguchi & Iwatsuki 1987)
- =Fissidens dimorphophyllus Sakurai, Bot. Mag. (Tokyo) 49: 139. 1935. (Noguchi & Iwatsuki 1987)
- =Fissidens niigatensis Sakurai, Bot. Mag. (Tokyo) 53: 59. 1939. (Noguchi & Iwatsuki 1987)
Fissidens townsendianus Pursell, Bryologist 97: 265. 1994. (Pursell 1994c; Pursell 2007a)

Replaced synonym: Fissidens weirii var. insertus Grout, N. Amer. Fl. 15: 179. 1943. (Grout 1943)
Fissidens translucens Brugg.-Nann. & M. Wigginton, J. Bryol. 34(3): 227. 2012. (Bruggeman-Nannenga & Wigginton 2012)
Fissidens tumescens Pursell & Frank Müll., Bryologist 111: 490. 2008. (Pursell & Müller 2008; Lavocat Bernard & Schäfer-Verwimp 2011)
Fissidens unipapillosus Brugg.-Nann., Cryptog., Bryol. 25: 309. 2004. (Bruggeman-Nannenga 2004; Bruggeman-Nannenga 2006a)
- =Fissidens glauculus var. gymnandrus P. de la Varde, Rev. Bryol., n.s. 4: 60. 1931. (Bruggeman-Nannenga 2024)
Fissidens usambaricus Broth., Bot. Jahrb. Syst. 20: 182. 1894. (Brotherus 1894; Bruggeman-Nannenga 2017)
- =Fissidens chevalieri Corb., Bull. Mus. Natl. Hist. Nat. 18: 108. 1912. (Bruggeman-Nannenga 1997)
- =Fissidens usambaricus var. acutifolius P. de la Varde, Bull. Soc. Bot. France 73: 377. 1926. (Potier de la Varde 1926a; Bruggeman-Nannenga 2009a)
Fissidens vanzantenii Brugg.-Nann., Proc. Kon. Ned. Akad. Wetensch., C 82: 25. 1979. (Bruggeman-Nannenga 1979; Bruggeman-Nannenga & Berendsen 1990)
Fissidens ventanae Müll. Hal., Hedwigia 36: 88. 1897. (Müller 1897e; Matteri 2003)
Fissidens ventricosus Lesq., Mem. Calif. Acad. Sci. 1: 7. 1868. (Lesquereux 1868; Pursell 2007b)
Fissidens victorialis Mitt., Trans. & Proc. Roy. Soc. Victoria 19: 92. 1882. (Mitten 1883; Catcheside & Stone 1988)
Fissidens virens Thwaites & Mitt., J. Linn. Soc., Bot. 13: 324. 1873. (Mitten 1873b; Suzuki & Iwatsuki 2013b)
- =Fissidens asperifolius Broth. & M. Fleisch., Hedwigia 38(Beibl.): 126. 1899. (Müller 1899; Wijk et al. 1962)
- =Fissidens asperifolius var. cambodianus Tixier, Bryophyt. Biblioth. 18: 21. 1979. (Tixier 1979)
Fissidens viridulus (Sw.) Wahlenb., Fl. Lapp.: 334. 1812. (Wahlenberg 1812; Hodgetts et al. 2020)

Basionym: Dicranum viridulum Sw., Monthly Rev. 34: 538. 1801. (Anonymous 1801; Hodgetts et al. 2020)

≡Schistophyllum incurvum subsp. viridulum (Sw.) Lindb., Musci Scand.: 13. 1879. (Lindberg 1879) ≡Fissidens incurvus var. viridulus (Sw.) Venturi & Bott., Atti Soc. Crittog. Ital. 3: 195. 1884, nom. illeg. ≡Schistophyllum viridulum (Sw.) Tolf, Bih. Kongl. Svenska Vetensk.-Akad. Handl. 16 Afd. 3(9): 51. 1891. (Tolf 1891; Hodgetts et al. 2020) ≡Fissidens incurvus subsp. viridulus (Sw.) Bouvet, Bull. Soc. Études Sci. Angers, n.s. 25: 428. 1896, nom. illeg. ≡Fissidens bryoides subsp. viridulus (Sw.) Kindb., Eur. N. Amer. Bryin. 2: 170. 1897[1898]. (Kindberg 1897) ≡Fissidens bryoides var. viridulus (Sw.) Broth., Laubm. Fennoskand.: 18. 1923. (Brotherus 1923) ≡Fissidens bryoides f. viridulus (Sw.) R.S. Chopra & S.S. Kumar, Ann. Cryptog. Phytopathol. (New Delhi) 5: 43. 1981. (Chopra & Kumar 1981)
- =Fissidens bambergeri Schimp., Bot. Zeitung (Berlin) 22(Beibl.): 12. 1864. (Hodgetts et al. 2020) ≡Fissidens incurvus subsp. bambergeri (Schimp.) Boulay, Musc. France, Mousses: 530. 1884. (Boulay 1884) ≡Fissidens viridulus var. bambergeri (Schimp.) Waldh., Förteckn. Skand. Växt., Moss. (ed. 2): 18. 1937. (Weimarck 1937) ≡Fissidens viridulus subsp. bambergeri (Schimp.) Waldh., Skand. Bladmossfl.: 340. 1939. ≡Fissidens limbatus var. bambergeri (Schimp.) Düll, Bryol. Beitr. 4: 29. 1984. (Düll 1984)
- =Fissidens viridulus var. synoicus Spruce, J. Bot. 19: 98. 1881. (Spruce 1881)
- =Fissidens impar Mitt., J. Linn. Soc., Bot. 21: 554. 1885. (Mitten 1886b; Erzberger 2016) ≡Schistophyllum bryoides var. impar (Mitt.) Lindb., Kongl. Svenska Vetensk. Acad. Handl., n.s. 23(10): 14. 1890. (Lindberg & Arnell 1890) ≡Fissidens bryoides var. impar (Mitt.) Jørg., Bergens Mus. Årbog 1894–95(13): 17. 1896. (Jørgensen 1896) ≡Fissidens bryoides subsp. impar (Mitt.) P. de la Varde, Rev. Bryol. Lichénol. 15: 32. 1945. (Potier de la Varde 1945a)
- =Fissidens impar var. camusii P. de la Varde, Rev. Bryol. 41: 94. 1920. (Potier de la Varde 1914)
- =Fissidens impar f. pseudopusillus P. de la Varde, Rev. Bryol. 41: 94. 1920. (Potier de la Varde 1914)
- =Fissidens impar f. tamarindifolius P. de la Varde, Rev. Bryol. 41: 95. 1920. (Potier de la Varde 1914)
- =Fissidens sanctae-crucis Meyl., Bull. Soc. Bot. Genève 18: 38. 1926, nom. illeg. (Wijk et al. 1962) ≡Fissidens jurensis Meyl., Bull. Soc. Bot. Genève 20: 457. 1928. (Wijk et al. 1962) ≡Fissidens bambergeri var. jurensis (Meyl.) Podp., Consp. Musc. Eur.: 81. 1954. (Podpěra 1954)
Fissidens vitreolimbatus Müll. Hal., Hedwigia 36: 86. 1897. (Müller 1897e; Matteri 2003)
Fissidens wageri Dixon, Trans. Roy. Soc. South Africa 4: 1. 1915. (Wager 1915; Magill 1981)
Fissidens waiensis J.E. Beever, New Zealand J. Bot. 37: 643. 1999. (Beever & Stone 1999; Beever 2014)
Fissidens waldheimii Elenkin, Izv. Imp. S.-Peterburgsk. Bot. Sada 7: 1. 1907. (Elenkin 1907; Podpěra 1954)
Fissidens walkeri Broth., Rec. Bot. Surv. India 1: 315. 1899. (Brotherus 1899b; O'Shea 2002)
Fissidens wallisii Müll. Hal., Linnaea 38: 574. 1874. (Müller 1874b; Pursell 2007a)
- =Fissidens faucium Müll. Hal., Bull. Herb. Boissier 6: 23. 1898. (Müller 1898a; Pursell 2007a)
Fissidens wattsii Broth., Proc. Linn. Soc. New South Wales 40: 368. 1915. (Brotherus & Watts 1915b; Stone 1994a)
Fissidens weirii Mitt., J. Linn. Soc., Bot. 12: 602. 1869. (Mitten 1869; Pursell 2007a)
- =Fissidens aporrocheilos Müll. Hal., Linnaea 37: 167. 1872. (Pursell 2007a)
- =Fissidens lefebvrei Besch., Rev. Bryol. 18: 50, 53. 1891. (Pursell 2007a)
- =Fissidens luteolimbatus Broth., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 3(3): 17. 1895. (Brotherus 1895a; Pursell 2007a)
- =Fissidens opacus Müll. Hal., Hedwigia 39: 240. 1900. (Pursell 2007a)
- =Fissidens hampeanus Besch. & Geh., Rev. Bryol. 28: 65. 1901. (Pursell 2007a)
- =Fissidens innovans Herzog, Biblioth. Bot. 87: 27. 1916. (Herzog 1916; Pursell 2007a)
- =Fissidens leucopteris Broth., Ergebn. Bot. Exp. Südbras., Musci: 273. 1924. (Pursell 2007a)
- =Fissidens howellii E.B. Bartram, Proc. Calif. Acad. Sci., ser. 4, 21: 78. 1933. (Bartram 1933b; Pursell 2007a)
- =Fissidens bizotii Thér., Mem. Soc. Cub. Hist. Nat. "Felipe Poey" 13: 205. 1939. (Thériot 1939; Pursell 2007a)
- =Fissidens ekmanii Thér., Mem. Soc. Cub. Hist. Nat. "Felipe Poey" 13: 205. 1939. (Thériot 1939; Pursell 2007a)
- =Fissidens acunae P. de la Varde & Thér., Mem. Soc. Cub. Hist. Nat. "Felipe Poey" 13: 206. 1939. (Thériot 1939; Pursell 2007a)
- =Fissidens pseudorepandus E.B. Bartram, Bull. Brit. Mus. (Nat. Hist.), Bot. 2: 37. 1955. (Bartram 1955; Pursell 2007a)
- =Fissidens weirii var. bistratosus W.R. Buck, Mem. New York Bot. Gard. 76(3): 18. 2003. (Buck 2003; Pursell 2007a)
Fissidens weirii var. hemicraspedophyllus (Cardot) Pursell, J. Hattori Bot. Lab. 55: 237. 1984. (Pursell 1984; Pursell 2007a)

Basionym: Fissidens hemicraspedophyllus Cardot, Rev. Bryol. 37: 120. 1910. (Cardot 1910; Pursell 1994c)
- =Fissidens hemiloma Besch., Rev. Bryol. 18: 50, 52. 1891. (Pursell 2007a)
- =Fissidens nicholsonii E.S. Salmon, Ann. Bot. (Oxford) 13: 123. 1899. (Salmon 1899; Pursell 2007a)
- =Fissidens longicaulis Broth., Hedwigia 45: 265. 1906. (Brotherus 1906a; Pursell 2007a)
Fissidens weirii Mitt. var. weirii
Fissidens wichurae Broth. & M. Fleisch., Hedwigia 38(Beibl. 3): 127. 1899. (Fleischer 1899; Tang et al. 2020)
- =Fissidens wichurae var. brevifolius M. Fleisch., Musci Buitenzorg 1: 33. 1904. (Fleischer 1904)
- =Fissidens peraculeatus Dixon, Ann. Bryol. 5: 19. 1932. (Dixon 1932a; Eddy 1988)
- =Fissidens pungentissimus Dixon, J. Bot. 80: 2. 1942. (Norris & Koponen 1987)
Fissidens widgrenii Paris, Actes Soc. Linn. Bordeaux 49(3): 165. 1895. (Paris 1895; Yano 2011)

Replaced synonym: Fissidens pellucidus Ångstr., Öfvers. Kongl. Vetensk.-Akad. Förh. 33(4): 49. 1876, nom. illeg. (Ångström 1876)
Fissidens yanoae Pursell, Hikobia 11: 357. 1994. (Pursell 1994a; Pursell 2007a)
Fissidens yucatanensis Steere, Amer. J. Bot. 22: 397. 1935. (Steere 1935; Pursell 2007a)
- =Fissidens panamensis Pursell & B.H. Allen, Bryologist 94: 214. 1991. (Pursell & Allen 1991; Pursell 2007a)
Fissidens zollingeri Mont., Ann. Sci. Nat., Bot., sér. 3, 4: 114. 1845. (Montagne 1845; Bruggeman-Nannenga 2017)
- =Fissidens kegelianus Müll. Hal., Syn. Musc. Frond. 1: 49. 1848. (Florschütz-de Waard 2011)
- =Fissidens pseudobryoides Schlieph., Bot. Zeitung (Berlin) 13: 424. 1855. (Schliephacke 1855; Pursell 2007a)
- =Fissidens vogelianus Mitt., Trans. Linn. Soc. London 23: 54. 1860. (Mitten 1860; Pursell 2007a)
- =Fissidens clavipes Sull., Musci Cub. Wright.: 275. 1861. (Sullivant 1861; Pursell 2007a)
- =Daltonia mucronata Bosch & Sande Lac., Bryol. Jav. 2: 32. 1862. (Dozy & Molkenboer 1870; Wijk et al. 1962)
- =Fissidens monandrus Mitt., J. Linn. Soc., Bot. 12: 598. 1869. (Mitten 1869; Pursell 2007a) ≡Conomitrium monandrum (Mitt.) Müll. Hal., Linnaea 39: 364. 1875. (Müller 1875; Pursell 2007a)
- =Fissidens macrophyllus Welw. & Duby, Mém. Soc. Phys. Genève 21: 223. 1872, nom. illeg. (Duby 1872; Pursell 2007a) ≡Fissidens dubyanus A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1874–75: 107. 1876. (Jaeger 1876; Pursell 2007a)
- =Conomitrium caripense Hampe & Müll. Hal., Linnaea 38: 574. 1874. (Müller 1874b; Pursell 2007a) ≡Fissidens caripensis (Hampe & Müll. Hal.) Paris, Index Bryol.: 463. 1896. (Pursell 2007a)
- =Fissidens balansanus Besch., Mém. Soc. Natl. Sci. Nat. Cherbourg, sér. 3, 21: 260. 1877. (Pursell 2007a)
- =Fissidens balansanus var. limosus Besch., Mém. Soc. Natl. Sci. Nat. Cherbourg, sér. 3, 21: 261. 1877. (Pursell 2007a)
- =Conomitrium subpalmatum Hampe, Vidensk. Meddel. Dansk Naturhist. Foren. Kjøbenhavn ser. 3, 9–10: 273. 1878, nom. illeg. (Pursell 2007a) ≡Fissidens subpalmatus Broth., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 3(3): 13. 1895, nom. illeg. (Brotherus 1895a; Pursell 2007a) ≡Fissidens evanidinervis Paris, Index Bryol.: 467. 1896. (Pursell 2007a)
- =Fissidens obsoletidens Müll. Hal. ex Besch., Ann. Sci. Nat., Bot., sér. 6, 9: 332. 1880. (Bescherelle 1879; Bruggeman-Nannenga 1997)
- =Fissidens platybryoides Müll. Hal., Flora 69: 505. 1886. (Müller 1886; Pursell 2007a)
- =Fissidens guarapiensis Besch., J. Bot. (Morot) 5: 252. 1891. (Pursell 2007a)
- =Fissidens crassicollis Besch., Rev. Bryol. 18: 50, 51. 1891. (Pursell 2007a)
- =Fissidens flexifrons Besch., Rev. Bryol. 18: 50, 51. 1891. (Pursell 2007a)
- =Fissidens xiphioides M. Fleisch., Hedwigia 38(Beibl.): 125. 1899. (Müller 1899; Pursell 2007a)
- =Fissidens mararyensis Broth., Hedwigia 45: 265. 1906. (Brotherus 1906a; Pursell 2007a)
- =Fissidens acutissimus Broth. & Paris, Öfvers. Finska Vetensk.-Soc. Förh. 48(15): 7. 1906. (Pursell 2007a)
- =Fissidens tenuisetus Cardot, Rev. Bryol. 35: 64. 1908. (Cardot 1908; Pursell 2007a)
- =Fissidens brachycaulon Broth., Wiss. Ergebn. Deut. Zentr.-Afr. Exped., Bot.: 143. 1910. (Brotherus 1910b; Pursell 2007a)
- =Fissidens jujuiensis Broth., Ark. Bot. 15(6): 2. 1918. (Pursell 2007a)
- =Fissidens herpetineuron Broth. & P. de la Varde, Arch. Bot. Bull. Mens. 3: 2. 1929. (Potier de la Varde 1929b; Pursell 2007a)
- =Fissidens papuensis E.B. Bartram, Farlowia 1: 41. 1943. (Bartram 1943; Norris & Koponen 1987)
Fissidens zwickeyi E.B. Bartram, Farlowia 1: 503. 1944. (Bartram 1944; Suzuki & Iwatsuki 2013b)

A Synopsis of Fissidens

References (758)