Domain Eucaryota Subdomain Chlorota Doweld (2001) Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981) Subkingdom Pteridobiotina Britton & A. Br. (1896) Superphylum Pteridophytanae Doweld (2001) Phylum Pteridophyta Schimp. (1879) see Phylum Filicinophyta Class Pteridopsida Ritgen (1828) see Order Polypodiales Link (1833) Subclass Polypodiidae Cronquist, Takht. & Zimmerm. (1966) Order Blechnales Pic. Serm. ex Reveal (1993) see Order Polypodiales Link (1833) 1 Family Blechnaceae Newman (1844) - blechnoids 2 Family Stenochlaenaceae Ching (1978) see Subfamily Stenochlaenoideae (Ching) J. P. Roux