Agaricus adustus var. crassus Alb. & Schwein., 1805 Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Fungi phylum Basidiomycota class Agaricomycetes order Russulales family Russulaceae genus Russula species Russula adusta Name Homonyms Agaricus adustus var. crassus Alb. & Schwein., 1805