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

Cornell University Plant Pathology Herbarium
Catalog #: CaliforniaF.00309
s.n.
Erysiphe communis (Wallr.) Schltdl.

Michigan State University Herbarium non-lichenized fungi
Catalog #: MSC0212950
J. P. Tracy s.n. 17 August 1930
Erysiphe communis (Wallr.) Schltdl.
United States, California, Humboldt, Big Lagoon

Field Museum of Natural History
Catalog #: C0285349F
8f0984ad-b932-4508-992b-f16a521eb8d3
J. P. Tracy #s.n. 17 August 1930
Erysiphe communis (Wallr.) Schltdl. (Wallr.) Schltdl.
U.S.A., California, Humboldt, Big Lagoon

USDA United States National Fungus Collections
Catalog #: BPI 948018
J. P. Tracy #s.n. 17 August 1930
Erysiphe communis (Wallr.) Schltdl.
United States, California, Humboldt, Big Lagoon

Charles Gardner Shaw Mycological Herbarium, Washington State University
Catalog #: WSP35243
J.P. Tracy s.n. 17 August 1930
Erysiphe communis (Wallr.) Schltdl.
United States, California, Humboldt, Big Lagoon