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
             1 Class Osmundopsida Doweld (2001) [monotypic] see Order Osmundales Bercht. & J.Presl (1820)
             2 Class Matoniopsida Doweld (2001) [monotypic] see Order Gleicheniales Link (1833)
             3 Class Hymenophyllopsida Doweld (2001) [monotypic] see Order Cyatheales A.B.Frank (1877)
             4 Class Gleicheniopsida Doweld (2001) see Order Gleicheniales Link (1833)
             5 Class Schizaeopsida Doweld (2001) [monotypic]
             6 Class Marsileopsida Trevis. (1877) see Order Salviniales Link (1833)
             7[4] Order †Heroleandrales Krassilov & Golovn. (2000) [monotypic] see Order Salviniales Link (1833)
             8[7] Class Pteridopsida Ritgen (1828) see Order Polypodiales Link (1833)
             9[8] Class Cyatheopsida Doweld (2001) see Order Cyatheales A.B.Frank (1877)