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 Hypopterygiaceae Mitt.
         1 Genus Arbusculohypopterygium Stech, T. Pfeiffer & W. Frey
         2 Genus Canalohypopterygium W. Frey & Schaepe
         3 Genus Catharomnion Hook.f. & Wilson (1855)
         4 ?Genus Cyathophorella M.Fleisch. (1908) see Genus Cyathophorum P.Beauv. (1804)
         5 Genus Cyathophorum P.Beauv. (1804)
         6 Genus Dendrocyathophorum Dixon (1936)
         7 Genus Dendrohypopterygium Kruijer
         8 Genus Hypopterygium Brid. (1827)
         9 Genus Lopidium Hook.f. & Wilson (1854)