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 Aspleniales Pic. Serm. ex Reveal (1996) [monotypic] see Order Polypodiales Link (1833) 1 Family Aspleniaceae Newman (1840) - spleenworts