Phylum Basidiomycota R.T.Moore (1980) - basidiomycetes Subphylum Ustilaginomycotina Doweld (2001) Class Exobasidiomycetes Begerow, M. Stoll & R. Bauer (2007) Order Exobasidiales Henn. (1898) Family Exobasidiaceae J.Schröt. (1888) Genus Arcticomyces Savile (1959)