C. Roumeguere [1-7400]

Cornell University Plant Pathology Herbarium
Catalog #: Roum.,F.Gallici-1380
s.n.
Erysiphe R. Hedw. ex DC.
France

USDA United States National Fungus Collections
Catalog #: BPI 1008044
s.n.
Erysiphe horridula f. ulmariae

University of Illinois Herbarium
Catalog #: ILL00102412
Letendre s.n. 00 June 1880
Erysiphe horridula f. ulmariae
France, (Siene Inférieur), Prairie du Équevilley,