Rhizocarpon petraeizum (Nyl.) Kieff., 1895 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Ascomycota class Lecanoromycetes order Rhizocarpales family Rhizocarpaceae genus Rhizocarpon species Rhizocarpon grande Name Homonyms Rhizocarpon petraeizum (Nyl.) Kieff., 1895