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 Culcitaceae Pic.Serm. [monotypic] 1 Genus Culcita C.Presl (1836)