Boletus nigrescens Heinr.Huber, 1935 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Basidiomycota class Agaricomycetes order Boletales family Boletaceae genus Leccinum species Leccinum duriusculum Name Homonyms Boletus nigrescens Richon & Roze Boletus nigrescens Heinr.Huber, 1935