Rhizocarpon petraeum var. lavatum (Fr.) Mudd Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Fungi phylum Ascomycota class Lecanoromycetes order Rhizocarpales family Rhizocarpaceae genus Rhizocarpon species Rhizocarpon lavatum Name Homonyms Rhizocarpon petraeum var. lavatum (Ach.) Körb. Rhizocarpon petraeum var. lavatum (Fr.) Mudd