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 Cyatheales A.B.Frank (1877) - tree ferns
             1 Family †Tanydoraceae J.E.Skog (1986) [monotypic]
             2 Family Loxsomataceae C.Presl (1847)
             3 Family Plagiogyriaceae Bower (1926) [monotypic]
             4 Family Metaxyaceae Pic.Serm. (1970) [monotypic]
             5 Family Dicksoniaceae M.R.Schomb. (1848), nom. cons. - dicksonioids
             6 Family Thyrsopteridaceae C.Presl [monotypic]
             7 Family Cyatheaceae Kaulf. (1827) - scaly tree ferns
             8 Family Culcitaceae Pic.Serm. [monotypic]
             9 Family Cibotiaceae Korall (2006) [monotypic]