Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981) Subkingdom Pteridobiotina Britton & A. Br. (1896) Superdivision Pteridophytanae Doweld (2001) [monotypic] see Superphylum Pteridophytanae Doweld (2001) Division Monilophyta Cantino & Donoghue Class Polypodiopsida Cronquist, Takht. & Zimmerm. (1966) - ferns Order Polypodiales Link (1833) - cathetogyrates Family Cystopteridaceae Shmakov (2001) 1 Genus Acystopteris Nakai (1933) 2 Genus Cystoathyrium Ching see Genus Cystopteris Bernh. (1805) 3 Genus Cystopteris Bernh. (1805) 4 Genus Gymnocarpium Newman (1851)