Xylobolus frustulosus (Fr.) P.Karst., 1881 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Basidiomycota class Agaricomycetes order Russulales family Stereaceae genus Xylobolus species Xylobolus frustulatus Name Homonyms Xylobolus frustulosus (Fr.) P.Karst., 1881