Phylum Bryophyta A.Braun (1864) - bryophytes
   Class Takakiopsida Goffinet & W.R.Buck (2004)
     Order Takakiales S. Hatt. & Inoue ex R.M. Schust. (1963)
       Family Takakiaceae S. Hatt. & Inoue (1958), nom. nud. see Family Takakiaceae M.Stech & W.Frey (2008)
         1 Genus Takakia S. Hatt. & Inoue (1958)