Rhytisma bistortae (DC.) Rostr. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Ascomycota class Leotiomycetes order Rhytismatales family Rhytismataceae genus Pseudorhytisma species Pseudorhytisma bistortae Name Homonyms Rhytisma bistortae (DC.) Lib. Rhytisma bistortae (DC.) Rostr.