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 Cyatheales A.B.Frank (1877) - tree ferns Family Dicksoniaceae M.R.Schomb. (1848), nom. cons. - dicksonioids 1 Genus Calochlaena (Maxon) R.A.White & M.D.Turner (1988) 2 Genus Dicksonia L'Hér. (1789) 3 Genus Lophosoria C.Presl (1847)