Polystictus cinerescens (Schwein.) Cooke Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Basidiomycota class Agaricomycetes order Polyporales family Irpicaceae genus Irpex species Irpex lacteus Name Homonyms Polystictus cinerescens (Schwein.) Cooke Polystictus cinerescens (Lév.) Sacc., 1888