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 Marsileopsida Trevis. (1877) see Order Salviniales Link (1833)
               Subclass Salviniidae Reveal (1996) see Order Salviniales Link (1833)
                 2 Order †Hydropteridiales Doweld (2001) [monotypic] see Order Salviniales Link (1833)
                 3 Order Salviniales Link (1833) - water ferns