Volvariella volvacea var. nigricans Kawam. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Fungi phylum Basidiomycota class Agaricomycetes order Agaricales family Pluteaceae genus Volvariella species Volvariella volvacea Name Homonyms Volvariella volvacea var. nigricans Kawam. ex Hongo Volvariella volvacea var. nigricans Kawam.