Placidium tenellum (Breuss) Breuss, 1996 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Ascomycota class Eurotiomycetes order Verrucariales family Verrucariaceae genus Catapyrenium species Catapyrenium tenellum Name Homonyms Placidium tenellum (Breuss) Breuss, 1996 Placidium tenellum (Schwein. ex E.Michener) Lendemer