Anonymous, Calif. Fungi
Herbarium of the University of California. [1- ? 1425]

Cornell University, Plant Pathology Herbarium
Catalog #: CaliforniaF.01248
s.n.
Erysiphe graminis DC.

USDA United States National Fungus Collections
Catalog #: BPI 948958
s.n.
Erysiphe graminis DC.
United States, California

Washington State University, Charles Gardner Shaw Mycological Herbarium
Catalog #: WSP58244
J. P. Tracy s.n. 27 July 1951
Erysiphe graminis DC.
United States, California, Mendocino, Howard Park, southeast of Willits

Field Museum of Natural History
Catalog #: C0285377F
42749d51-c6c9-4304-9d48-d2ef4640167b
J. P. Tracy #19629 27 July 1951
Erysiphe graminis DC. DC.
U.S.A., California, Mendocino, Howard Park, southeast of Willits

University of California Berkeley, University Herbarium
Catalog #: UC1402963
J. P. Tracy #19629 27 July 1951
Blumeria graminis (DC.) Speer
USA, California, Mendocino, Howard Park, southeast of Willits

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0015554
Joseph P. Tracy #19629 27 July 1951
Erysiphe graminis DC.
United States, California, Mendocino, southeast of Willits, Howard Park