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 Dicranidae Doweld (2001)
             Order Grimmiales M. Fleisch.
               Family Grimmiaceae Arn.
                 1 Genus Bucklandiella Roiv.
                 2 Genus Codriophorus P. Beauv.
                 3 Genus Dryptodon Brid. (1826)
                 4 Genus Grimmia Hedw. (1801)
                 5 Genus Leucoperichaetium Magill (1982)
                 6 Genus Niphotrichum (Bednarek-Ochyra) Bednarek-Ochyra & Ochyra
                 7 Genus Racomitrium Brid. (1819)
                 8 Genus Schistidium Bruch & Schimp. (1845), nom. cons.