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 Urocystales R. Bauer & Oberw. (1997), orth. inval. see Order Urocystidales R. Bauer & Oberw. (1997)
               Family Urocystaceae Begerow, R. Bauer & Oberw. (1998), orth. inval. see Family Urocystidaceae Begerow, R. Bauer & Oberw. (1998)
                 1 Genus Mundkurella Thirum. (1944)
                 2 Genus Urocystis Rabenh. ex Fuckel (1870), nom. cons.
                 3 Genus Ustacystis Zundel (1945)
                 4 Genus Vankya Ershad (2000)