Pyrenula cinerella (Nyl.) Branth & Rostr., 1869 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Ascomycota class Arthoniomycetes order Arthoniales family Arthoniaceae genus Arthonia species Arthonia subpruinosa Name Homonyms Pyrenula cinerella (Nyl.) Branth & Rostr., 1869