? nigrescens Lasch Dataset GBIF Backbone Taxonomy Rank UNRANKED Classification kingdom Fungi phylum Basidiomycota class Agaricomycetes order Agaricales family Tricholomataceae Name Homonyms ? nigrescens Schlegel, 1871 ? nigrescens J.K.Townsend, 1837 ? nigrescens Schaeffer, 1904 ? nigrescens Lasch ? nigrescens O.P.-Cambridge, 1912 ? nigrescens Cameron, 1906 ? nigrescens Brady, 1877