Phylum Basidiomycota R.T.Moore (1980) - basidiomycetes
   Subphylum Agaricomycotina Doweld (2001)
     Class Agaricomycetes Doweld (2001)
       Order Agaricales Underw. (1899)
         Genus Polygaster Fr. (1823), nom. sanct., nom. dub., incertae sedis