Rustroemia tuberosa (Hedw. ex Fr.) P.Karst. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Ascomycota class Leotiomycetes order Helotiales family Sclerotiniaceae genus Dumontinia species Dumontinia tuberosa Name Homonyms Rustroemia tuberosa (Hedw. ex Fr.) P.Karst.