C. Roumeguere [1-7400]

USDA United States National Fungus Collections
Catalog #: BPI 1007424
s.n.
Oidium erysiphoides Fr.
France

Cornell University Plant Pathology Herbarium
Catalog #: Roum.,F.Gallici-0759
Dale Pond s.n.
Oidium
France

University of Illinois Herbarium
Catalog #: ILL00101770
Desmazières s.n.
Oidium erysyphoides
France, Lille (Nord),