Polyporus ptychogaster C.A.Ludw. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Basidiomycota class Agaricomycetes order Polyporales family Dacryobolaceae genus Postia species Postia ptychogaster Name Homonyms Polyporus ptychogaster F.Ludw. Polyporus ptychogaster C.A.Ludw.