Phylum Basidiomycota R.T.Moore (1980) - basidiomycetes Subphylum Ustilaginomycotina Doweld (2001) Class Ustilaginomycetes Warm. (1884) - smut fungi Order Ustilaginales G.Winter (1880) Family Ustilaginaceae Tul. & C.Tul. (1847) Genus Dirkmeia F.Y. Bai, Q.M. Wang, Begerow & Boekhout (2015)