Phylum Basidiomycota R.T.Moore (1980) - basidiomycetes Subphylum Ustilaginomycotina Doweld (2001) Class Ustilaginomycetes Warm. (1884) - smut fungi Order Ustilaginales G.Winter (1880) Family Websdaneaceae Vánky (2001) Genus Restiosporium Vánky (2000)