Flora Europaea Haeckel (1866) - plants
   [Pteridophyta] Schimp. (1879) see Subphylum Pteridophytina (Eichler) Cavalier-Sm. (1998)
     01 Family Lycopodiaceae P.Beauv. ex Mirb. (1802) - clubmosses
     02 Family Selaginellaceae Willk. (1854)
     03 Family Isoetaceae Rchb. (1828) see Family Isoëtaceae Rchb. (1828)
     04 Family Equisetaceae Michx. ex DC. (1804) - horsetails
     05 Family Ophioglossaceae Martinov (1820) - ophioglossoids
     06 Family Osmundaceae Martinov (1820)
     07 Family Sinopteridaceae Koidz. see Subfamily Cheilanthoideae Horvat (1927)
     08 Family Adiantaceae Newman (1840), nom. cons. - maidenhairs see Subfamily Adiantoideae Horvat (1927)
     09 Family Pteridaceae E.D.M.Kirchn. (1831) - pteroids
     10 Family Cryptogrammaceae Pic.Serm. see Family Pteridaceae E.D.M.Kirchn. (1831)
     11 Family Gymnogrammaceae see Family Adiantaceae Newman (1840), nom. cons.
     12 Family Dicksoniaceae M.R.Schomb. (1848), nom. cons. - dicksonioids
     13 Family Hypolepidaceae Pic.Serm. (1970) see Family Dennstaedtiaceae Lotsy (1909)
     14 Family Davalliaceae M.R. Schomb. (1848) - davallioids
     15 Family Hymenophyllaceae Mart. (1835) - filmy ferns
     16 Family Thelypteridaceae Ching ex Pic.Serm. (1970) - thelypteroids
     17 Family Aspleniaceae Newman (1840) - spleenworts
     18 Family Athyriaceae Alston (1956)
     19 Family Aspidiaceae Mett. ex A.B.Frank see Family Dryopteridaceae Herter (1949), nom. cons.
     20 Family Elaphoglossaceae Pic.Serm. (1968) see Family Dryopteridaceae Herter (1949), nom. cons.
     21 Family Blechnaceae Newman (1844) - blechnoids
     22 Family Polypodiaceae J.Presl & C.Presl (1822) - polygrams
     23 Family Marsileaceae Mirb. (1802) - clover ferns
     24 Family Salviniaceae Martinov (1820) - floating ferns
     25 Family Azollaceae Wettst. (1903) see Family Salviniaceae Martinov (1820)