Between brackets is the number of accepted species
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- Biota
- Kingdom Animalia
- Kingdom Archaea
- Kingdom Bacteria
- Kingdom Chromista
- Kingdom Fungi
- Kingdom Plantae
- Phylum Acritarcha †
- Phylum Algae (awaiting allocation)
- Phylum Algae incertae sedis
- Phylum Anthocerotophyta
- Phylum Bryophyta
- Phylum Calcitarcha †
- Phylum Charophyta
- Phylum Chlorophyta
- Phylum Eophyta †
- Phylum Glaucophyta
- Phylum Gymnospermophyta accepted as Tracheophyta
- Phylum Horneophyta †
- Phylum Magnoliophyta accepted as Tracheophyta
- Phylum Marchantiophyta
- Phylum Picozoa
- Phylum Plantae (awaiting allocation)
- Phylum Prasinodermatophyta
- Phylum Pteridophyta accepted as Tracheophyta
- Phylum Rhodelphidia
- Phylum Rhodophyta
- Phylum Sporae dispersae †
- Phylum Tracheophyta
- Subdivision Lycopodiophytina
- Subdivision Polypodiophytina
- Class Cladoxylopsida † accepted as Polypodiopsida
- Class Equisetopsida accepted as Polypodiopsida
- Class Filicopsida accepted as Polypodiopsida
- Class Polypodiopsida
- Subclass Equisetidae
- Subclass Marattiidae
- Subclass Ophioglossidae
- Subclass Polypodiidae
- Order Cyatheales
- Order Filicales accepted as Polypodiales
- Order Gleicheniales
- Order Hydropteridales † accepted as Salviniales
- Order Hymenophyllales
- Order Marsileales accepted as Salviniales
- Order Osmundales
- Order Palaeophyllales †
- Order Polypodiales
- Family Acrostichaceae Mettenius ex A.B. Frank, 1874 † accepted as Pteridaceae E.D.M. Kirchner, 1831
- Family Actiniopteridaceae Pichi Sermolli, 1962 accepted as Pteridaceae E.D.M. Kirchner, 1831
- Family Adiantaceae Newman, 1840 accepted as Pteridaceae E.D.M. Kirchner, 1831
- Family Aspidiaceae G.H. Mettenius ex A.B. Frank in Leunis, 1877 accepted as Dryopteridaceae Herter, 1949
- Family Aspleniaceae Newman, 1840
- Family Athyriaceae Alston, 1956
- Family Blechnaceae Newman, 1844
- Family Cryptogrammaceae Pichi Sermolli, 1963 accepted as Pteridaceae E.D.M. Kirchner, 1831
- Family Cystodiaceae J.R. Croft, 1986
- Family Cystopteridaceae Shmakov, 2001
- Family Davalliaceae M.R. Schomburgk, 1848
- Family Dennstaedtiaceae Lotsy, 1909
- Family Desmophlebiaceae C.M. Mynssen, A. Vasco, L.S. Sylvestre, R.C. Moran & G. Rouhan, 2016
- Family Didymochlaenaceae Ching ex L.B. Zhang & L. Zhang, 2015 †
- Family Diplaziopsidaceae X.-C. Zhang & M.J.M. Christenhusz in M.J.M. Christenhusz, X.-C. Zhang & H. Schneider, 2011
- Family Dryopteridaceae Herter, 1949
- Genus Aconiopteris K.B. Presl, 1836 accepted as Elaphoglossum Schott ex J. Smith, 1841
- Genus Acropelta Nakai, 1953 accepted as Polystichum A.W. Roth, 1799
- Genus Acrophorus K.B. Presl, 1836
- Genus Acrorumohra (H. Itô) H. Itô in Nakai & Honda, 1939
- Genus Adenoderris J. Smith, 1875
- Genus Aetopteron J.F. Ehrhart ex H.D. House, 1920 accepted as Polystichum A.W. Roth, 1799
- Genus Amblia K.B. Presl, 1836 accepted as Cyrtomium K.B. Presl, 1836
- Genus Anapausia K.B. Presl, 1851 accepted as Bolbitis Schott, 1835
- Genus Arachniodes C.L. Blume, 1828
- Genus Arcypteris L.M. Underwood, 1903 accepted as Pleocnemia K.B. Presl, 1836
- Genus Arthrobotrya J. Smith, 1875 accepted as Teratophyllum Mettenius ex Kuhn, 1870
- Genus Arthrobotrys (K.B. Presl) Lindley, 1846 accepted as Dryopteris Adanson, 1763
- Genus Aspidistes T.M. Harris, 1961 †
- Genus Aspidites Colla in Borson, 1829 †
- Genus Atalopteris Maxon & Christensen, 1922 accepted as Ctenitis (C. Christensen) C. Christensen in Tardieu & C. Christensen, 1938
- Genus Ataxipteris R.E. Holttum, 1984 accepted as Ctenitis (C. Christensen) C. Christensen in Tardieu & C. Christensen, 1938
- Genus Bolbitis Schott, 1835
- Genus Byrsopteris Morton, 1960 accepted as Arachniodes C.L. Blume, 1828
- Genus Campium K.B. Presl, 1936 accepted as Bolbitis Schott, 1835
- Genus Cheiloepton Fee accepted as Lomagramma J. Smith, 1841
- Genus Cheilolepton Fée, 1845 accepted as Lomagramma J. Smith, 1841
- Genus Coveniella M.D. Tindale, 1986
- Genus Ctenitis (C. Christensen) C. Christensen in Tardieu & C. Christensen, 1938
- Genus Cyclodium K.B. Presl, 1836
- Genus Cyrtogonellum Ching, 1938 accepted as Cyrtomium K.B. Presl, 1836
- Genus Cyrtogonium J. Smith, 1842 accepted as Bolbitis Schott, 1835
- Genus Cyrtomidictyum Ching, 1940 accepted as Cyrtomium K.B. Presl, 1836
- Genus Cyrtomium K.B. Presl, 1836
- Genus Diacalpe Blume, 1828 accepted as Peranema D. Don, 1825
- Genus Dichasium (A. Braun) Fée, 1852 accepted as Dryopteris Adanson, 1763
- Genus Diclisodon T. Moore, 1857 accepted as Dryopteris Adanson, 1763
- Genus Dictyoglossum J. Smith, 1846 accepted as Elaphoglossum Schott ex J. Smith, 1841
- Genus Dictyopteris K.B. Presl, 1836 accepted as Pleocnemia K.B. Presl, 1836
- Genus Dorcapteris K.B. Presl, 1851 accepted as Olfersia Raddi, 1819
- Genus Druopteris Adanson, 1763
- Genus Dryopolystichum Copeland, 1947
- Genus Dryopsis R.E. Holttum & P.J. Edwards, 1986
- Genus Dryopteris Adanson, 1763
- Genus Dryostichum W.H. Wagner, 1992
- Genus Edanyoa Copeland, 1952 accepted as Bolbitis Schott, 1835
- Genus Egenolfia Schott, 1836 accepted as Bolbitis Schott, 1835
- Genus Elaphoglossum Schott ex J. Smith, 1841
- Species Elaphoglossum aemulum (Kaulfuss) Brack.
- Species Elaphoglossum alatum Gaud.
- Species Elaphoglossum apodum (Kaulfuss) Schott ex J. Sm.
- Species Elaphoglossum chartaceum (Baker ex Jenman) C. Christens.
- Species Elaphoglossum conforme (Sw.) Schott accepted as Elaphoglossum aemulum (Kaulfuss) Brack.
- Species Elaphoglossum crassicaule Copeland accepted as Elaphoglossum alatum Gaud.
- Species Elaphoglossum crassifolium (Gaud.) Anders. & Crosby
- Species Elaphoglossum crinitum (L.) Christ
- Species Elaphoglossum cubense (Mett. ex Kuhn) C. Chr.
- Species Elaphoglossum decoratum (Kunze) T. Moore
- Species Elaphoglossum dussii Underwood ex Maxon accepted as Elaphoglossum petiolatum (Sw.) Urban
- Species Elaphoglossum eggersii (Baker) Christ
- Species Elaphoglossum erinaceum (Fée) T. Moore
- Species Elaphoglossum fauriei Copeland accepted as Elaphoglossum alatum Gaud.
- Species Elaphoglossum firmum (Mett. ex Kuhn) Urban accepted as Elaphoglossum simplex (Sw.) Schott ex J. Sm.
- Species Elaphoglossum flaccidum (Fée) T. Moore accepted as Elaphoglossum rigidum (Aubl.) Urban
- Species Elaphoglossum glabellum J. Sm.
- Species Elaphoglossum gorgoneum (Kaulfuss) Brack. accepted as Elaphoglossum aemulum (Kaulfuss) Brack.
- Species Elaphoglossum herminieri (Bory & Fée) T. Moore
- Species Elaphoglossum hirtum (Sw.) C. Christens.
- Species Elaphoglossum latifolium (Sw.) J. Sm.
- Species Elaphoglossum lingua (C. Presl) Brack.
- Species Elaphoglossum longifolium J. Sm.
- Species Elaphoglossum martinicense (Desv.) T. Moore
- Species Elaphoglossum maxonii Underwood ex Morton
- Species Elaphoglossum micradenium (Fée) T. Moore accepted as Elaphoglossum pellucidum Gaud.
- Species Elaphoglossum muscosum (Sw.) T. Moore
- Species Elaphoglossum palmeri Underw. & Maxon
- Species Elaphoglossum parvisquamaeum Skottsberg accepted as Elaphoglossum alatum Gaud.
- Species Elaphoglossum parvisquameum Skottsb.
- Species Elaphoglossum pellucidum Gaud.
- Species Elaphoglossum peltatum (Sw.) Urban
- Species Elaphoglossum petiolatum (Sw.) Urban
- Species Elaphoglossum piloselloides (K. Presl) T. Moore accepted as Elaphoglossum spathulatum (Bory) T. Moore
- Species Elaphoglossum procurrens (Melt.) Moore
- Species Elaphoglossum pteropus auct. non C. Christens. accepted as Elaphoglossum maxonii Underwood ex Morton
- Species Elaphoglossum pusillum (Mett. ex Kuhn) C. Christens. accepted as Elaphoglossum spathulatum (Bory) T. Moore
- Species Elaphoglossum reticulatum (Kaulfuss) Gaud. accepted as Elaphoglossum crassifolium (Gaud.) Anders. & Crosby
- Species Elaphoglossum rigidum (Aubl.) Urban
- Species Elaphoglossum serpens Maxon & Morton ex Maxon
- Species Elaphoglossum simplex (Sw.) Schott ex J. Sm.
- Species Elaphoglossum smithii (Baker) Christ
- Species Elaphoglossum spathulatum (Bory) T. Moore
- Species Elaphoglossum spatulatum (Bory) T. Moore
- Species Elaphoglossum underwoodianum Maxon accepted as Elaphoglossum martinicense (Desv.) T. Moore
- Species Elaphoglossum wawrae (Luerss.) C. Christens.
- Genus Fadyenia Endlicher, 1842
- Genus Filix Séguier, 1754 accepted as Dryopteris Adanson, 1763
- Genus Filixmas Hill ex Farwell, 1931 accepted as Filix-mas Hill ex Farwell, 1931
- Genus Filix-mas Hill ex Farwell, 1931 accepted as Dryopteris Adanson, 1763
- Genus Hemesteum A.A.H. Léveillé, 1915 accepted as Polystichum A.W. Roth, 1799
- Genus Heteroneurum K.B. Presl, 1851 accepted as Bolbitis Schott, 1835
- Genus Heteronevron Fée, 1845 accepted as Bolbitis Schott, 1835
- Genus Hymenodium Fée, 1845 accepted as Elaphoglossum Schott ex J. Smith, 1841
- Genus Hypopeltis A. Michaux, 1803 accepted as Polystichum A.W. Roth, 1799
- Genus Jenkinsia W.J. Hooker, 1841 accepted as Bolbitis Schott, 1835
- Genus Lastreopsis Ching, 1938
- Genus Leptorumohra (H. Itô) H. Itô in Nakai & Honda, 1939 accepted as Arachniodes C.L. Blume, 1828
- Genus Lithostegia Ching, 1933
- Genus Lomagramma J. Smith, 1841
- Genus Lomogramma accepted as Lomagramma J. Smith, 1841
- Genus Lophodium Newman, 1851 accepted as Dryopteris Adanson, 1763
- Genus Maxonia Christensen, 1916
- Genus Megalastrum R.E. Holttum, 1986
- Genus Meniphyllum C. von Ettingshausen in J.S. Gardner & C. von Ettingshausen, 1879 †
- Genus Mickelia R.C. Moran, P.H. Labiak & M.A. Sundue, 2010
- Genus Microstaphyla K.B. Presl, 1851 accepted as Elaphoglossum Schott ex J. Smith, 1841
- Genus Nephrodium Michaux, 1803 accepted as Dryopteris Adanson, 1763
- Genus Nothoperanema (Tagawa) Ching, 1966
- Genus Olfersia Raddi, 1819
- Genus Papuapteris Christensen, 1937 accepted as Polystichum A.W. Roth, 1799
- Genus Parapolystichum (Keyserling) Ching, 1940 accepted as Lastreopsis Ching, 1938
- Genus Peltapteris Link, 1841 accepted as Elaphoglossum Schott ex J. Smith, 1841
- Genus Peranema D. Don, 1825
- Genus Phanerophlebia K.B. Presl, 1836
- Genus Phanerophlebiopsis Ching, 1965 accepted as Arachniodes C.L. Blume, 1828
- Genus Plecosorus Fée, 1852 accepted as Polystichum A.W. Roth, 1799
- Genus Pleocnemia K.B. Presl, 1836
- Genus Poecilopteris K.B. Presl, 1836 accepted as Bolbitis Schott, 1835
- Genus Polybotrya Humboldt & Bonpland ex Willdenow, 1810
- Genus Polystichopsis (J. Smith) Holttum, 1947
- Genus Polystichum A.W. Roth, 1799
- Genus Prosperifilix X. Long, Y. Peng, Q. Feng, M.S. Engel, C. Shi & S. Wang, 2023 †
- Genus Pteris Gleditsch ex Scopoli, 1760 accepted as Dryopteris Adanson, 1763
- Genus Pycnopteris T. Moore, 1855 accepted as Dryopteris Adanson, 1763
- Genus Revwattsia D.L. Jones, 1998
- Genus Rhipidopteris Schott ex Fée, 1845 accepted as Elaphoglossum Schott ex J. Smith, 1841
- Genus Rumohra Raddi, 1819
- Genus Sagenopteris Trevisan, 1851 accepted as Pleocnemia K.B. Presl, 1836
- Genus Sorolepidium Christ, 1911 accepted as Polystichum A.W. Roth, 1799
- Genus Soromanes Fée, 1845 accepted as Polybotrya Humboldt & Bonpland ex Willdenow, 1810
- Genus Sphaeropteris N. Wallich, 1830 accepted as Peranema D. Don, 1825
- Genus Stenolepia C.R.W.K. van Alderwerelt van Rosenburgh, 1909
- Genus Stigmatopteris Christensen, 1909
- Genus Teratophyllum Mettenius ex Kuhn, 1870
- Genus Trichoneuron Ching, 1965 accepted as Lastreopsis Ching, 1938
- Genus Wessiea K.B. Pigg & G.W. Rothwell, 2001 †
- Family Elaphoglossaceae Pichi Sermolli, 1968 accepted as Dryopteridaceae Herter, 1949
- Family Grammitidaceae Newman, 1840 accepted as Polypodiaceae J. Presl & C. Presl, 1822
- Family Hemidictyaceae M.J.M. Christenhusz & H. Schneider, 2011
- Family Hemionitidaceae Pichi Sermolli, 1966 accepted as Pteridaceae E.D.M. Kirchner, 1831
- Family Hypodematiaceae Ching, 1975
- Family Hypolepidaceae Pichi Sermolli, 1970 accepted as Dennstaedtiaceae Lotsy, 1909
- Family Lindsaeaceae C. Presl ex M.R. Schomburgk, 1848
- Family Lomariopsidaceae Alston, 1956
- Family Lonchitidaceae C. Presl ex M.R. Schomburgk, 1848
- Family Loxogrammaceae Ching ex Pichi Sermolli, 1975 accepted as Polypodiaceae J. Presl & C. Presl, 1822
- Family Nephrolepidaceae Pichi Sermolli, 1975
- Family Oleandraceae Ching ex Pichi Sermolli, 1965
- Family Onocleaceae Pichi Sermolli, 1970
- Family Parkeriaceae Hooker, 1825 accepted as Pteridaceae E.D.M. Kirchner, 1831
- Family Peranemaceae Ching, 1940 accepted as Dryopteridaceae Herter, 1949
- Family Peranemataceae Ching, 1940 accepted as Dryopteridaceae Herter, 1949
- Family Platyzomataceae Nakai, 1950 accepted as Pteridaceae E.D.M. Kirchner, 1831
- Family Polypodiaceae J. Presl & C. Presl, 1822
- Family Pteridaceae E.D.M. Kirchner, 1831
- Family Rhachidosoraceae X.-C. Zhang in M.J.M. Christenhusz, X.-C. Zhang & H. Schneider, 2011
- Family Saccolomataceae A. Doweld, 2008
- Family Taenitidaceae Pichi Sermolli, 1975 accepted as Pteridaceae E.D.M. Kirchner, 1831
- Family Tectariaceae Panigrahi, 1986
- Family Thelypteridaceae Pichi Sermolli, 1970
- Family Vittariaceae Ching, 1940 accepted as Pteridaceae E.D.M. Kirchner, 1831
- Family Woodsiaceae Herter, 1949
- Genus Tapelrayen M.A. Machado, E.I. Vera, M.G. Passalia & M.M. Ponce, 2021 †
- Order Polypodiidae (awaiting allocation)
- Order Pteridales
- Order Salviniales
- Order Schizaeales
- Genus Discosoropteris J. Pšenička et al., 2022 †
- Genus Furcillopteris I.M. Miller & L.J. Hickey, 2008 †
- Genus Gagariostrobus N.K. Mogutcheva in S.P. Bulynnikova & I.G. Klimova, 1987 †
- Genus Gleichenites A.C. Seward, 1927 † accepted as Korallipteris E.I. Vera & M.G. Passalia, 2012 †
- Genus Korallipteris E.I. Vera & M.G. Passalia, 2012 †
- Genus Mikasapteris H. Nishida, R.A. Stockey, Y. Takebe, J. Legrand & T. Yamada, 2022 †
- Genus Polypodites H.R. Göppert, 1836 †
- Genus Sectilopteris I.M. Miller & L.J. Hickey, 2008 †
- Genus Adelocladoxis T. Durieux, M.A. Lopez, A.W. Bronson & A.M.F. Tomescu, 2021 †
- Genus Anthracochondrus Kusta, 1898 †
- Genus Berendtiopteris E.-M. Sadowski, L.J. Seyfullah & A.R. Schmidt in Sadowski et al., 2019 †
- Genus Bifariusotheca X.H. Zhao ex A.B. Doweld, 2019 †
- Genus Eusphenopteris R. Kidston, 1882 †
- Genus Kamatheca A.B. Doweld, 2019 †
- Genus Paracladoxylon Chu & Tomescu, 2024 †
- Class Protoleptosporangiopsida † accepted as Polypodiopsida
- Class Psilotopsida accepted as Polypodiopsida
- Subdivision Spermatophytina
- Class Progymnospermopsida †
- Class Pteridophyta/Pteridospermophyta (unclassified foliage) †
- Class Rhyniopsida †
- Class Trimerophytopsida †
- Class Zosterophyllopsida †
- Order Stenokoleales †
- Genus Ahnetia A.-L. Decombeix & J. Galtier, 2017 †
- Genus Aysenoxylon R.R. Pujana, J.E. Bostelmann, R.A. Ugalde, M.P. Riquelme & T. Torres, 2023 †
- Genus Dameria A.-L. Decombeix, B. Meyer-Berthaud, J. Galtier, J.A. Talent & R. Mawson, 2011 †
- Genus Dibracophyton S.-G. Hao, J.-Z. Xue, X. Zhu & D.-M. Wang, 2012 †
- Genus Douaphyton H.-H. Xu, Y. Wang, P. Tang & Y. Wang, 2017 †
- Genus Endogenites A.T. Brongniart, 1822 †
- Genus Flabellopteris R.W. Gess & C. Prestianni, 2021 †
- Genus Franhueberia L.A. Hoffman & A.M.F. Tomescu, 2013 †
- Genus Jowingera M.A. Bickner & A.M.F. Tomescu, 2019 †
- Genus Kenrickia S. Toledo & A.M.F. Tomescu in Toledo et al., 2021 †
- Genus Leptocentroxyla M.A. Bickner & A.M.F. Tomescu, 2019 †
- Genus Macrotaeniopteris W.P. Schimper, 1869 †
- Genus Mosacaulis R.W.J.M. van der Ham & J.H.A. van Konijnenburg-van Cittert in van der Ham et al., 2011 †
- Genus Nebuloxyla M.A.K. Lalica & A.M.F. Tomescu, 2023 †
- Genus Ninsaria A.-L. Decombeix, J. Galtier, S. McLoughlin & B. Meyer-Berthaud in Decombeix et al., 2019 †
- Genus Oleandridium W.P. Schimper, 1869 †
- Genus Perplexa K.C. Pfeiler & A.M.F. Tomescu, 2023 †
- Genus Petrosjania S.M. Snigirevsky & A.P. Lyubarova, 2023 †
- Genus Planatophyton P. Gerrienne, B. Meyer-Berthaud, N. Yang, P. Steemans & C.-S. Li, 2014 †
- Genus Poacites Schlotheim ex Ballenstedt, 1822 †
- Genus Sporangites J.W. Dawson, 1863 †
- Genus Stenoloboxyla M.A. Bickner & A.M.F. Tomescu, 2019 †
- Genus Taeniopteris A.T. Brongniart, 1828 †
- Genus Tainioxyla M.A. Bickner & A.M.F. Tomescu, 2019 †
- Genus Thursophyton A.G. Nathorst, 1914-1915 †
- Genus Thursophyton A.G. Nathorst ex E.A.N. Arber, 1921 † accepted as Thursophyton A.G. Nathorst, 1914-1915 †
- Genus Tichavekia J. Pšenička, J. Sakala & P. Kraft in Kraft et al., 2019 †
- Genus Tregiovia G. Forte & E. Kustatscher, 2023 †
- Genus Wilhowia P.G. Gensel, 2022 †
- Genus Xadzigacalix A.A. Klymiuk, G.W. Rothwell & R.A. Stockey, 2022 †
- Genus Xinhangia J.-N. Yang & D.-M. Wang, 2022 †
- Genus Yabeiella S. Ôishi, 1931 †
- Phylum Vendophyta † accepted as Algae incertae sedis
- Class Nematophyceae † accepted as Nematophyta †
- Kingdom Protista accepted as Protozoa
- Kingdom Protozoa
- Kingdom Viruses
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