Rhizocarpon geographicum var. urceolatum Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Fungi phylum Ascomycota class Lecanoromycetes order Rhizocarpales family Rhizocarpaceae genus Rhizocarpon Name Homonyms Rhizocarpon geographicum f. urceolatum (Schaer.) Körb. Rhizocarpon geographicum subsp. urceolatum (Schaer.) Hazsl. Rhizocarpon geographicum subsp. urceolatum (Schaer.) Körb., 1855 Rhizocarpon geographicum var. urceolatum