Phylum Basidiomycota R.T.Moore (1980) - basidiomycetes
   Subphylum Ustilaginomycotina Doweld (2001)
     Class Ustilaginomycetes Warm. (1884) - smut fungi
       Order Urocystidales R. Bauer & Oberw. (1997)
         Family Urocystidaceae Begerow, R. Bauer & Oberw. (1998)
           1 Genus Flamingomyces R. Bauer, M. Lutz, Piątek, Vánky & Oberw. (2007)
           2 Genus Melanoxa M. Lutz, Vánky & R. Bauer (2013)
           3 Genus Melanustilospora Denchev (2003)
           4 Genus Mundkurella Thirum. (1944)
           5 Genus Urocystis Rabenh. ex Fuckel (1870), nom. cons.
           6 Genus Ustacystis Zundel (1945)
           7 Genus Vankya Ershad (2000)