Agaricus costatus (Fr.) Secr. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Basidiomycota class Agaricomycetes order Agaricales family Entolomataceae genus Entoloma species Entoloma costatum Name Homonyms Agaricus costatus (Fr.) Secr. Agaricus costatus (Fr.) Secr. ex Fr.