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 Marattiophyta Heintze (1927) [monotypic] see Division Monilophyta Cantino & Donoghue
             Class Marattiopsida Doweld (2001) see Subclass Marattiidae Klinge (1882)
               Order Christenseniales Doweld (2001) see Order Marattiales Link (1833)
                 Family Christenseniaceae Ching (1940) see Family Marattiaceae Kaulf. (1824), nom. cons.
                   Genus Christensenia Maxon (1905)