Agaricus purus var. caesius Pers., 1801 Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Fungi phylum Basidiomycota class Agaricomycetes order Agaricales family Mycenaceae genus Mycena species Mycena pura Name Homonyms Agaricus purus var. caesius Pers., 1801 Agaricus purus subsp. caesius Pers.