organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Eukaryota Chatton, 1925 - eukaryotes
     Kingdom Fungi R.T.Moore (1980) - fungi
       Phylum Basidiomycota R.T.Moore (1980) - basidiomycetes
         Class Ustilaginomycetes Warm. (1884) - smut fungi
           Subclass Ustilaginomycetidae Jülich (1981) see Class Ustilaginomycetes Warm. (1884)
             Order Ustilaginales G.Winter (1880)
               Family Geminaginaceae Vánky (2001)
                 1 Genus Geminago Vánky & R. Bauer (1996)