Lactarius pubescens f. betularum (Bon) Bon Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Fungi phylum Basidiomycota class Agaricomycetes order Russulales family Russulaceae genus Lactarius species Lactarius pubescens Name Homonyms Lactarius pubescens var. betularum (Bon) Bon Lactarius pubescens f. betularum (Bon) Bon