Rhizocarpon horphininum (Vain.) Zahlbr. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Ascomycota class Lecanoromycetes order Rhizocarpales family Rhizocarpaceae genus Rhizocarpon species Rhizocarpon distinctum Name Homonyms Rhizocarpon horphininum (Vain.) Zahlbr.