Phylum Basidiomycota R.T.Moore (1980) - basidiomycetes Subphylum Agaricomycotina Doweld (2001) Class Agaricomycetes Doweld (2001) Order Boletales E.-J. Gilbert (1931) Family Protogastraceae Zeller (1934) Genus Protogaster Thaxt. (1934)