Armillaria imperialis (Fr.) Quél. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Basidiomycota class Agaricomycetes order Agaricales family Biannulariaceae genus Catathelasma species Catathelasma imperiale Name Homonyms Armillaria imperialis (Fr.) Quél. Armillaria imperialis P.Karst.