Verrucaria umbrosa (A.Massal.) Trevis., 1860 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Ascomycota class Eurotiomycetes order Verrucariales family Verrucariaceae genus Thelidium species Thelidium umbrosum Name Homonyms Verrucaria umbrosa (A.Massal.) Trevis., 1860