Umbilicaria grisea f. subpapyria Frey, 1933 Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Fungi phylum Ascomycota class Lecanoromycetes order Umbilicariales family Umbilicariaceae genus Umbilicaria species Umbilicaria freyi Name Homonyms Umbilicaria grisea f. subpapyria Frey, 1933