Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981) Subkingdom Pteridobiotina Britton & A. Br. (1896) Superdivision Pteridophytanae Doweld (2001) [monotypic] see Superphylum Pteridophytanae Doweld (2001) Division Monilophyta Cantino & Donoghue Class Polypodiopsida Cronquist, Takht. & Zimmerm. (1966) - ferns Order Polypodiales Link (1833) - cathetogyrates 01 Family Lonchitidaceae C.Presl ex M.R.Schomb. [monotypic] 02 Family Saccolomataceae Doweld (2008) 03 Family Cystodiaceae J.R.Croft [monotypic] 04 Family Lindsaeaceae C.Presl ex M.R.Schomb. (1848) - lindsaeoids 05 Family Dennstaedtiaceae Lotsy (1909) - dennstaedtioids 06 Family Pteridaceae E.D.M.Kirchn. (1831) - pteroids 07 Family Cystopteridaceae Shmakov (2001) 08 Family Aspleniaceae Newman (1840) - spleenworts 09 Family Diplaziopsidaceae X.C.Zhang & Christenh. (2011) 10 Family Thelypteridaceae Ching ex Pic.Serm. (1970) - thelypteroids 11 Family Woodsiaceae Herter (1949) - lady ferns 12 Family Rhachidosoraceae X.C.Zhang (2011) [monotypic] 13 Family Onocleaceae Pic.Serm. (1970) - onocleoids 14 Family Blechnaceae Newman (1844) - blechnoids 15 Family Athyriaceae Alston (1956) 16 Family Hypodematiaceae Ching 17 Family Dryopteridaceae Herter (1949), nom. cons. - dryopteroids 18 Family Lomariopsidaceae Alston (1956) - lomariopsids 19 Family Nephrolepidaceae Pic.Serm. (1975) [monotypic] - sword ferns 20 Family Tectariaceae Panigrahi - tectarioids 21 Family Oleandraceae Ching ex Pic.Serm. (1965) [monotypic] 22 Family Davalliaceae M.R. Schomb. (1848) - davallioids 23 Family Polypodiaceae J.Presl & C.Presl (1822) - polygrams 24 Family Hemidictyaceae Christenh. & H.Schneid. (2011) [monotypic]