Russula adusta var. coerulescens Fr. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Fungi phylum Basidiomycota class Agaricomycetes order Russulales family Russulaceae genus Russula species Russula adusta Name Homonyms Russula adusta var. coerulescens Fr. Russula adusta var. coerulescens Fr. ex P.Karst.