Porina mastoidea subsp. rudis Müll.Arg., 1882 Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Fungi phylum Ascomycota class Lecanoromycetes order Pertusariales family Pertusariaceae genus Porina species Porina nucula Name Homonyms Porina mastoidea var. rudis Müll.Arg. Porina mastoidea subsp. rudis Müll.Arg., 1882