Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
   Subkingdom Bryobiotina Campb. (1890)
     Division Bryophyta A.Braun (1864) - mosses and liverworts see Phylum Bryophyta A.Braun (1864)
       Subdivision Bryophytina Engl. (1892) see Subphylum Bryophytina Engl. (1892)
         Class Bryopsida McClatchie (1897) - mosses
           Subclass Bryidae Engl. (1892) - mosses
             Superorder Hypnanae W.R.Buck & Goffinet ex W.R. Buck, C.J. Cox, A.J. Shaw & Goffinet (2005)
               Order Hypnales W.R. Buck & Vitt
                 Family Calliergonaceae Vanderp., Hedenäs, C.J.Cox & A.J.Shaw (2002)
                   1 Genus Calliergon (Sull.) Kindb. (1894)
                   2 Genus Hamatocaulis Hedenäs
                   3 Genus Loeskypnum H.K.G. Paul (1918)
                   4 Genus Straminergon Hedenäs
                   5 Genus Warnstorfia Loeske (1907)