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

Cornell University, Plant Pathology Herbarium
Catalog #: CaliforniaF.00888
s.n.
Erysiphe polygoni DC.

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0015683
J.P. Tracy #8886 26 July 1930
Erysiphe polygoni DC.
United States, California, Humboldt, Eureka;

Field Museum of Natural History
Catalog #: C0285453F
J.P. Tracy #8886 26 July 1930
Erysiphe polygoni DC.
USA, California, Humboldt, Eureka; Eureka, in garden

Louisiana State University, Bernard Lowy Mycological Herbarium
Catalog #: LSU00155887
Joseph P. Tracy #8886 26 July 1930
Erysiphe polygoni DC.
United States, California, Humboldt, Eureka.