asexual fungi R.T.Moore (1980) - fungi Phylum Basidiomycota R.T.Moore (1980) - basidiomycetes Subphylum Ustilaginomycotina Doweld (2001) Class Ustilaginomycetes Warm. (1884) - smut fungi Order Urocystidiales orth. inval., incertae sedis see Order Urocystidales R. Bauer & Oberw. (1997) 1 Family Urocystidaceae Begerow, R. Bauer & Oberw. (1998)