Subclass [Bryidae] Engl. (1892) - mosses
   Superorder Hypnanae W.R.Buck & Goffinet ex W.R. Buck, C.J. Cox, A.J. Shaw & Goffinet (2005)
     Order Hookeriales M. Fleisch.
       Family Hookeriaceae Schimp. (1856)
         1 ?Genus Crossomitrium Müll.Hal. (1874)
         2 Genus Hookeria Sm. (1808), nom. cons.