Porina mastoidea (Ach.) Müll., 1885 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Ascomycota class Lecanoromycetes order Ostropales family Porinaceae genus Porina species Porina mastoidea Name Homonyms Porina mastoidea (Ach.) Müll.Arg. Porina mastoidea (Ach.) A.Massal.