Thelidium papulare f. fuscum Zschacke, 1920 Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Fungi phylum Ascomycota class Eurotiomycetes order Verrucariales family Verrucariaceae genus Thelidium species Thelidium papulare Name Homonyms Thelidium papulare f. fuscum Zschacke, 1920