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 Gleicheniopsida Doweld (2001) see Order Gleicheniales Link (1833) Order Loxsomatales Pic.Serm. ex Reveal (1993) [monotypic] see Order Cyatheales A.B.Frank (1877) Family Loxsomataceae C.Presl (1847)