Phylum Bryophyta A.Braun (1864) - bryophytes Class Bryopsida McClatchie (1897) - mosses Subclass Bryidae Engl. (1892) - mosses Superorder Bryanae Goffinet & W.R. Buck Order Orthotrichales Dixon Family Orthotrichaceae Arn. Genus Stoneobryum D.H. Norris & H.Rob. (1981)