Flora van Nederland Haeckel (1866) - plants
   Division Pteridophyta Schimp. (1879) see Subphylum Pteridophytina (Eichler) Cavalier-Sm. (1998)
     Class Filicopsida C.Agardh (1822) - ferns see Class Polypodiopsida Cronquist, Takht. & Zimmerm. (1966)
       04 Family Ophioglossaceae Martinov (1820) - ophioglossoids
       05 Family Osmundaceae Martinov (1820)
       06 Family Hypolepidaceae Pic.Serm. (1970) see Family Dennstaedtiaceae Lotsy (1909)
       07 Family Thelypteridaceae Ching ex Pic.Serm. (1970) - thelypteroids
       08 Family Aspleniaceae Newman (1840) - spleenworts
       09 Family Athyriaceae Alston (1956)
       10 Family Dryopteridaceae Herter (1949), nom. cons. - dryopteroids
       11 Family Blechnaceae Newman (1844) - blechnoids
       12 Family Polypodiaceae J.Presl & C.Presl (1822) - polygrams
       13 Family Marsileaceae Mirb. (1802) - clover ferns
       14 Family Salviniaceae Martinov (1820) - floating ferns
       15 Family Azollaceae Wettst. (1903) see Family Salviniaceae Martinov (1820)