Phylum Bryophyta A.Braun (1864) - bryophytes Class Bryopsida McClatchie (1897) - mosses Subclass Dicranidae Doweld (2001) Order Pottiales M. Fleisch. Family Ephemeraceae J.W.Griff. & Henfr. (1855), nom. cons. see Family Pottiaceae Hampe (1853), nom. cons. Genus Ephemerum Hampe (1837), nom. cons.