Phylum Bryophyta A.Braun (1864) - bryophytes
   Class Bryopsida McClatchie (1897) - mosses
     Subclass Bryidae Engl. (1892) - mosses
       Superorder Rhizogonianae see Superorder Bryanae Goffinet & W.R. Buck
         Order Rhizogoniales Goffinet & W.R. Buck
           Family Racopilaceae Kindb.
             1 Genus Powellia Mitt. (1868)
             2 Genus Racopilum P.Beauv. (1805)