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 Micromitrium Austin (1870)