Peronospora grisea (Unger) de Bary Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Oomycota class Peronosporea order Peronosporales family Peronosporaceae genus Peronospora species Peronospora grisea Name Homonyms Peronospora grisea (Unger) de Bary Peronospora grisea Unger