Phylum [Tracheophyta] Sinnott ex Caval.-Sm. (1998) - vascular plants Subphylum Polypodiophytina Reveal (1996) [monotypic] Class Polypodiopsida Cronquist, Takht. & Zimmerm. (1966) - ferns Subclass Polypodiidae Cronquist, Takht. & Zimmerm. (1966) Order Polypodiales Link (1833) - cathetogyrates (eupolypods) Suborder Polypodiineae Dumort. (1829) 43 Family Didymochlaenaceae Ching ex L.B.Zhang & L. Zhang (2015) [monotypic] 44 Family Hypodematiaceae Ching 45 Family Dryopteridaceae Herter (1949), nom. cons. - dryopteroids 46 Family Nephrolepidaceae Pic.Serm. (1975) [monotypic] - sword ferns 47 Family Lomariopsidaceae Alston (1956) - lomariopsids 48 Family Tectariaceae Panigrahi - tectarioids 49 Family Oleandraceae Ching ex Pic.Serm. (1965) [monotypic] 50 Family Davalliaceae M.R. Schomb. (1848) [monotypic] - davallioids 51 Family Polypodiaceae J.Presl & C.Presl (1822) - polygrams