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
- 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
- Genus Acrostichum Linnaeus, 1753
- Genus Actiniopteris Link, 1841
- Genus Adenogramme Link ex Engler in Engler & Drude, 1908 accepted as Anogramma Link, 1841
- Genus Adianthum X. Manetti, 1756 accepted as Adiantum Linnaeus, 1753
- Genus Adiantopsis Fée, 1852
- Genus Adiantum Linnaeus, 1753
- Genus Afropteris Alston, 1956 accepted as Pteris Linnaeus, 1753
- Genus Aleuritopteris Fée, 1852
- Genus Allosorus Bernhardi, 1805 accepted as Cheilanthes O. Swartz, 1806
- Genus Ananthacorus Underwood & Maxon ex Maxon, 1908
- Genus Anetium Splitgerber, 1840
- Genus Anogramma Link, 1841
- Genus Anopteris Prantl ex Diels in Engler & Prantl, 1899 accepted as Pteris Linnaeus, 1753
- Genus Anthrophyum Kaulfuss, 1824
- Genus Antrophyopsis (R.C. Benedict) E. Schuettpelz, 2016
- Genus Antrophyum Kaulfuss, 1824
- Genus Arctopteris Samylina, 1964 †
- Genus Argyrochosma (J. Smith) M.D. Windham, 1987
- Genus Aropteris Alston, 1956 accepted as Afropteris Alston, 1956
- Genus Aspidotis (Nuttall ex W.J. Hooker) E.B. Copeland, 1947
- Genus Aspleniopsis Mettenius ex Kuhn, 1882 accepted as Austrogramme Fournier, 1873
- Genus Astrolepis D.M. Benham & M.D. Windham, 1992
- Genus Austrogramme Fournier, 1873
- Genus Baja M. Windham & L.O. George in George et al., 2019
- Genus Bakeropteris O. Kuntze, 1891 accepted as Cassebeera Kaulfuss, 1824
- Genus Bommeria Fournier in Baillon, 1877
- Genus Botryogramme Fée, 1852 accepted as Llavea Lagasca, 1816
- Genus Calciphilopteris J.C. Yesilyurt & H. Schneider, 2010
- Genus Callogramme Fée, 1852 accepted as Syngramma J. Smith, 1845
- Genus Calomelanos (K.B. Presl) Lindley, 1846 accepted as Pityrogramma Link, 1833
- Genus Campteria K.B. Presl, 1836 accepted as Pteris Linnaeus, 1753
- Genus Cassebeera Kaulfuss, 1824
- Genus Ceratodactylis J. Smith in W.J. Hooker, 1839 accepted as Llavea Lagasca, 1816
- Genus Ceratopteris A.T. Brongniart, 1822
- Genus Ceropteris Link, 1841 accepted as Pityrogramma Link, 1833
- Genus Cerosora (J.G. Baker) Domin, 1929
- Genus Cheilanthes O. Swartz, 1806
- Genus Cheilopecton Fée, 1857
- Genus Cheiloplecton Fée, 1857
- Genus Cheilosoria Trevisan, 1877 accepted as Pellaea Link, 1841
- Genus Choristosoria Mettenius ex Kuhn in von der Decken, 1879 accepted as Pellaea Link, 1841
- Genus Chrysochosma (J. Smith) Kümmerle, 1914 accepted as Cheilanthes O. Swartz, 1806
- Genus Chrysodium Fée, 1845 accepted as Acrostichum Linnaeus, 1753
- Genus Cincinalis Gleditsch ex Desvaux, 1811 accepted as Cheilanthes O. Swartz, 1806
- Genus Circinites J.M. Robledo & L.M. Anzótegui in Robledo et al., 2020 †
- Genus Coniodictyogramme Nakai, 1949
- Genus Coniogramme Fée, 1852
- Genus Copelandiopteris B.C. Stone, 1973 accepted as Pteris Linnaeus, 1753
- Genus Cosentinia Todaro, 1866
- Genus Craspedodictyum Copeland, 1911 accepted as Syngramma J. Smith, 1845
- Genus Cryptogramma R. Brown in Franklin, 1823
- Genus Diclidopteris Brackenridge in Wilkes, 1854 accepted as Monogramma Commerson ex Schkuhr, 1808
- Genus Dictyogramme Fée, 1850 accepted as Coniogramme Fée, 1852
- Genus Diplothmema D. Stur, 1877 †
- Genus Doryopteris J. Smith, 1841
- Genus Dyctiogramme K.B. Presl, 1851 accepted as Coniogramme Fée, 1852
- Genus Ellobocarpus Kaulfuss, 1824 accepted as Ceratopteris A.T. Brongniart, 1822
- Genus Endoa T. Kimura, 1959 †
- Genus Eriosonia Pichi Sermolli, 1977
- Genus Eriosorus Fée, 1852
- Genus Furcaria Desvaux, 1827 accepted as Ceratopteris A.T. Brongniart, 1822
- Genus Gaga K.M. Pryer, F.-W. Li & M.D. Windham, 2012
- Genus Gastoniella L.B. Zhang & L. Zhang, 2016
- Genus Gymnogramma Desvaux, 1811 accepted as Hemionitis Linnaeus, 1753
- Genus Gymnogramme G. Kunze, 1824 accepted as Gymnopteris Bernhardi, 1799
- Genus Gymnopteris Bernhardi, 1799 accepted as Hemionitis Linnaeus, 1753
- Genus Haplopteris K.B. Presl, 1836
- Genus Hecistopteris J. Smith in Bentham, 1842
- Species Hecistopteris pumila (Spreng.) J. Sm.
- Genus Hemionanthes Mickel, 1992
- Genus Hemionitis Linnaeus, 1753
- Genus Hemipteris Rosenstock, 1908 accepted as Pteris Linnaeus, 1753
- Genus Heterophlebium Fée, 1852 accepted as Pteris Linnaeus, 1753
- Genus Heteropteris Fée, 1869 accepted as Doryopteris J. Smith, 1841
- Genus Hewardia J. Smith, 1841 accepted as Adiantum Linnaeus, 1753
- Genus Holcochlaena J.G. Baker, 1867 accepted as Pellaea Link, 1841
- Genus Holttumia E.B. Copeland, 1941 accepted as Taenitis Willdenow ex Schkuhr, 1805
- Genus Holttumiella E.B. Copeland, 1941 accepted as Taenitis Willdenow ex Schkuhr, 1805
- Genus Idiopteris T.G. Walker, 1958 accepted as Pteris Linnaeus, 1753
- Genus Jamesonia W.J. Hooker & Greville, 1830
- Genus Kolymella V.A. Samylina & G.G. Filippova, 1970 †
- Genus Lathyropteris Christ, 1907 accepted as Pteris Linnaeus, 1753
- Genus Lemapteris Rafinesque, 1819 accepted as Pteris Linnaeus, 1753
- Genus Leptolepidium Hsing & S.K. Wu in S.K. Wu, 1979 accepted as Cheilanthes O. Swartz, 1806
- Genus Leptostegia D. Don, 1825 accepted as Onychium Kaulfuss, 1820
- Genus Litobrochia K.B. Presl, 1836 accepted as Pteris Linnaeus, 1753
- Genus Llavea Lagasca, 1816
- Genus Lytoneuron (J.F. Klotzsch) J.C. Yesilyurt, 2015
- Genus Mickelopteris C.R. Fraser-Jenkins, 2016
- Genus Mildella Trevisan, 1877
- Genus Mineirella M.M. Ponce & M.A. Scataglini, 2020 accepted as Hemionitis Linnaeus, 1753
- Genus Monogonia K.B. Presl, 1836 accepted as Pteris Linnaeus, 1753
- Genus Monogramma Commerson ex Schkuhr, 1808
- Genus Myriopteris Fée, 1852
- Genus Negripteris Pichi Sermolli, 1946 accepted as Cheilanthes O. Swartz, 1806
- Genus Nephopteris Lellinger, 1966
- Genus Nesoris Rafinesque, 1838 accepted as Pityrogramma Link, 1833
- Genus Neurocallis A.L.A. Fée, 1845
- Genus Neurogramma Link, 1841 accepted as Hemionitis Linnaeus, 1753
- Genus Neurogramme F.L.E. Diels ex A.J. Cronquist, 1972 accepted as Neurogramma Link, 1841
- Genus Neurosoria Mettenius ex Kuhn, 1869 accepted as Cheilanthes O. Swartz, 1806
- Genus Nevrocallis Fée, 1845 accepted as Neurocallis A.L.A. Fée, 1845
- Genus Nothochlaena G.F. Kaulfuss, 1824 accepted as Notholaena R. Brown, 1810
- Genus Notholaena R. Brown, 1810
- Genus Notogramme K.B. Presl, 1851 accepted as Coniogramme Fée, 1852
- Genus Ochropteris J. Smith, 1841
- Genus Oeosporangium De Visiani, 1867 accepted as Cheilanthes O. Swartz, 1806
- Genus Oetosis Necker ex E.L. Greene, 1900 accepted as Vittaria Smith, 1793
- Genus Onychium Kaulfuss, 1820
- Genus Ormopteris J. Smith, 1875 accepted as Pellaea Link, 1841
- Genus Palibiniopteris V.D. Prynada, 1956 †
- Genus Paraceterach Copeland, 1947
- Genus Parahemionitis G. Panigrahi, 1991
- Genus Parkeria W.J. Hooker, 1825 accepted as Ceratopteris A.T. Brongniart, 1822
- Genus Parkerioidea B. Renault, 1901 †
- Genus Pellaea Link, 1841
- Genus Pellaeopsis J. Smith, 1875 accepted as Pellaea Link, 1841
- Genus Pentagramma G. Yatskievych, Windham & E. Wollenweber, 1990
- Genus Peripteris Rafinesque, 1815 accepted as Pteris Linnaeus, 1753
- Genus Phorolobus Desvaux, 1827 accepted as Cryptogramma R. Brown in Franklin, 1823
- Genus Phyllitis Rafinesque, 1819 accepted as Pteris Linnaeus, 1753
- Genus Pityrogramma Link, 1833
- Genus Pityromeria L.D. Gomez, 1979
- Genus Platyloma J. Smith, 1841
- Genus Platytaenia Kuhn, 1882 accepted as Taenitis Willdenow ex Schkuhr, 1805
- Genus Platyzoma R. Brown, 1810 accepted as Pteris Linnaeus, 1753
- Genus Pleurofossa Nakai ex H. Itô, 1936 accepted as Monogramma Commerson ex Schkuhr, 1808
- Genus Polyaetnium Desvaux, 1827 accepted as Polytaenium Desvaux, 1827
- Genus Polytaenium Desvaux, 1827
- Genus Pomataphytum Jones, 1930
- Genus Pomatophytum M.E. Jones, 1930 accepted as Cheilanthes O. Swartz, 1806
- Genus Psilogramme Kuhn, 1882 accepted as Eriosorus Fée, 1852
- Genus Pteridanetium E.B. Copeland, 1947 accepted as Anetium Splitgerber, 1840
- Genus Pteridella Mettenius ex Kuhn in C.C. von der Decken, 1879 accepted as Pellaea Link, 1841
- Genus Pteridiopsis S.-L. Zheng & W. Zhang, 1983 †
- Genus Pteridium Rafinesque, 1814 accepted as Pteris Linnaeus, 1753
- Genus Pteris Linnaeus, 1753
- Genus Pterozonium Fée, 1850
- Genus Pycnodoria K.B. Presl, 1851 accepted as Pteris Linnaeus, 1753
- Genus Radiovittaria (R.C. Benedict) E.H. Crane, 1998
- Genus Rheopteris Alston, 1956
- Genus Roebuckia S. McLoughlin, 1996 †
- Genus Saffordia Maxon, 1913 accepted as Trachypteris E.F. André ex Christ, 1899
- Genus Schizogramma Link, 1841 accepted as Hemionitis Linnaeus, 1753
- Genus Schizolepton Fée, 1850 accepted as Taenitis Willdenow ex Schkuhr, 1805
- Genus Schizostege W.F. Hillebrand, 1888 accepted as Pteris Linnaeus, 1753
- Genus Schizostegeopsis Copeland, 1958 accepted as Pteris Linnaeus, 1753
- Genus Scoliosorus T. Moore, 1857
- Genus Sericopteris J. Zhao, X.M. Zhou & Z.R. He, 2025
- Genus Sinopteris C. Christensen & Ching, 1933 accepted as Cheilanthes O. Swartz, 1806
- Genus Syngramma J. Smith, 1845
- Genus Syngrammatopsis Alston, 1952 accepted as Pterozonium Fée, 1850
- Genus Synochlamys Fée, 1857 accepted as Pellaea Link, 1841
- Genus Taeniopsis J. Smith, 1841 accepted as Vittaria Smith, 1793
- Genus Taeniopteris W.J. Hooker, 1841 accepted as Vittaria Smith, 1793
- Genus Taenitis Willdenow ex Schkuhr, 1805
- Genus Tchucotopteris N.D. Vassilevskaja, 1977 †
- Genus Teleozoma R. Brown in Franklin, 1823 accepted as Ceratopteris A.T. Brongniart, 1822
- Genus Thelipteris Adanson accepted as Thelypteris Adanson, 1763
- Genus Thelypteris Adanson, 1763 accepted as Pteris Linnaeus, 1753
- Genus Toxopteris Trevisan, 1877 accepted as Syngramma J. Smith, 1845
- Genus Trachypteris E.F. André ex Christ, 1899
- Genus Trichiogramme Kuhn, 1882 accepted as Pterozonium Fée, 1850
- Genus Trismeria Fée, 1852 accepted as Pityrogramma Link, 1833
- Genus Tryonella Pichi Sermolli, 1975 accepted as Doryopteris J. Smith, 1841
- Genus Tryonia E. Schuettpelz, J. Prado & A.T. Cochran, 2014
- Genus Vaginopteris Nakai, 1943 accepted as Monogramma Commerson ex Schkuhr, 1808
- Genus Vaginularia Fée, 1852 accepted as Monogramma Commerson ex Schkuhr, 1808
- Genus Vittaria Smith, 1793
- Genus Vittarites B.D. Sharma, 1998 †
- 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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