Russula fallax var. knauthii (Singer) Konrad & Maubl. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Fungi phylum Basidiomycota class Agaricomycetes order Russulales family Russulaceae genus Russula species Russula fragilis Name Homonyms Russula fallax var. knauthii (Singer) Konrad & Maubl.