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

Cornell University Plant Pathology Herbarium
Catalog #: CaliforniaF.00310
s.n.
Erysiphe communis (Wallr.) Schltdl.

Michigan State University Herbarium non-lichenized fungi
Catalog #: MSC0212951
J. P. Tracy s.n. 17 August 1930
Erysiphe communis (Wallr.) Schltdl.
United States, California, Humboldt, Big Lagoon

University of California Berkeley, University Herbarium
Catalog #: UC538794
J. P. Tracy s.n. 17 August 1930
Erysiphe communis (Wallr.) Schltdl.
USA, California, Humboldt, Big Lagoon

Field Museum of Natural History
Catalog #: C0285350F
3e192f94-4e14-465c-b4cd-ea7be3081b18
J. P. Tracy #s.n. 17 August 1930
Erysiphe communis (Wallr.) Schltdl. (Wallr.) Schltdl.
U.S.A., California, Humboldt, Big Lagoon

Charles Gardner Shaw Mycological Herbarium, Washington State University
Catalog #: WSP35242
Joseph P. Tracy s.n. 17 August 1930
Erysiphe communis (Wallr.) Schltdl.
United States, California, Humboldt, Big Lagoon

USDA United States National Fungus Collections
Catalog #: BPI 562225
Tracy J. P. s.n. 17 August 1930
Erysiphe communis (Wallr.) Schltdl.
United States, California, Big Lagoon, Humboldt Co.

USDA United States National Fungus Collections
Catalog #: BPI 948019
Tracy J. P. #s.n. 17 August 1930
Erysiphe communis (Wallr.) Schltdl.
United States, California, Humboldt, Big Lagoon