Boletus cellulosus Justus Müll., 1777 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Basidiomycota class Agaricomycetes order Hymenochaetales family Rickenellaceae genus Sidera species Sidera vulgaris Name Homonyms Boletus cellulosus Lightf. Boletus cellulosus Justus Müll., 1777 Boletus cellulosus Wahlenb.