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 Osmundopsida Doweld (2001) [monotypic] see Order Osmundales Bercht. & J.Presl (1820)
               Order Osmundales Bercht. & J.Presl (1820)
                 Family Osmundaceae Martinov (1820)
                   Genus Osmunda L. (1753)