Rhytisma umbonatum Desm. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Ascomycota class Leotiomycetes order Rhytismatales family Rhytismataceae genus Rhytisma species Rhytisma umbonatum Name Homonyms Rhytisma umbonatum Hoppe Rhytisma umbonatum Desm. Rhytisma umbonatum (Hoppe ex Wallr.) Rabenh.