Psathyra fibrillosa Pers. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Basidiomycota class Agaricomycetes order Agaricales family Psathyrellaceae genus Psathyrella species Psathyrella senex Name Homonyms Psathyra fibrillosa (Pers.) Kumm. Psathyra fibrillosa (Pers.) Sacc. Psathyra fibrillosa Pers.