Collybia asema (Fr.) Kumm. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Basidiomycota class Agaricomycetes order Agaricales family Omphalotaceae genus Rhodocollybia species Rhodocollybia butyracea Name Homonyms Collybia asema (Fr.) Gillet Collybia asema (Fr.) Antonín, Halling & Noordel.