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.
                   1 Genus Christensenia Maxon (1905)