Erysiphe graminis subsp. avenae É.J.Marchal Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Fungi phylum Ascomycota class Leotiomycetes order Helotiales family Erysiphaceae genus Blumeria species Blumeria graminis Name Homonyms Erysiphe graminis subsp. avenae É.J.Marchal