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

Cornell University, Plant Pathology Herbarium
Catalog #: CaliforniaF.00794
s.n.
Peronospora claytoniae Farlow

University of Michigan Herbarium
Catalog #: 335672
H. E. Parks #7536 00 August 1951
Peronospora claytoniae Farl.
USA, California, Humboldt, Trinidad, Spruce Cove.

Michigan State University Herbarium
Catalog #: MSC0214113
H. E. Parks #7536 00 August 1951
Peronospora claytoniae Farlow
United States, California, Humboldt, Trinidad; Spruce Cove

Washington State University, Charles Gardner Shaw Mycological Herbarium
Catalog #: WSP39058
H.E. Parks s.n. 00 August 1951
Peronospora claytoniae Farlow
United States, California, Humboldt, Spruce Cove, Trinidad

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0026812
H.E. Parks #7536 00 August 1951
Peronospora claytoniae Farl.
United States, California, Humboldt, Trinidad; Spruce Cove

University of Illinois Herbarium
Catalog #: ILL00096203
HE Parks #7536 00 August 1951
Peronospora claytoniae Farlow
USA, California, Humboldt, Trinidad; Spruce Cove

University of Florida Herbarium
Catalog #: FLAS-F-43464
HE Parks #7536 00 August 1951
Peronospora claytoniae Farlow
United States, California, Humboldt, Spruce Cove;