Microsphaera quercina (Schwein.) Murrill Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Ascomycota class Leotiomycetes order Helotiales family Erysiphaceae genus Erysiphe species Erysiphe alphitoides Name Homonyms Microsphaera quercina (Schwein.) Murrill Microsphaera quercina (Schwein.) Griffiths