Erysiphe ulmariae Pers. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Ascomycota class Leotiomycetes order Helotiales family Erysiphaceae genus Erysiphe species Erysiphe ulmariae Name Homonyms Erysiphe ulmariae Pers. Erysiphe ulmariae Pers. ex Desm.