Rhizocarpon alboatrum var. epipolium (Ach.) A.L.Sm. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Fungi phylum Ascomycota class Lecanoromycetes order Caliciales family Caliciaceae genus Diplotomma species Diplotomma epipolium Name Homonyms Rhizocarpon alboatrum var. epipolium (Ach.) A.L.Sm. Rhizocarpon alboatrum var. epipolium (Ach.) Anzi