J.B. Ellis, B.M. Everhart, and E. Bartholomew [1501-5100, plus extras]

USDA United States National Fungus Collections
Catalog #: BPI 787577
Dearness, J. s.n. 09 May 1911
Peronospora claytoniae Farl.
Canada, Ontario, London

USDA United States National Fungus Collections
Catalog #: BPI 787578
Dearness, J. #5307 09 May 1911
Peronospora claytoniae Farl.
Canada, Ontario, London

USDA United States National Fungus Collections
Catalog #: BPI 965502
Dearness, J. #s.n. 09 May 1911
Peronospora claytoniae Farl.
Canada, Ontario, London

USDA United States National Fungus Collections
Catalog #: BPI 965602
Dearness, J. #s.n. 09 May 1911
Peronospora claytoniae Farl.
Canada, Ontario, London

Purdue University, Kriebel Herbarium
Catalog #: PUL00020866
J Dearness s.n. 09 May 1911
Peronospora claytoniae Farlow
Canada, Ontario, London;

University of Florida Herbarium
Catalog #: FLAS-F-00970
J Dearness #s.n. 09 May 1911
Peronospora claytoniae Farlow
Canada, Ontario, London;

Cornell University Plant Pathology Herbarium
Catalog #: F.Columbiani-3441
J. Dearness s.n.
Peronospora Corda

Charles Gardner Shaw Mycological Herbarium, Washington State University
Catalog #: WSP4962
J. Dearness s.n. 09 May 1911
Peronospora claytoniae Farlow
Canada, Ontario, London

Michigan State University Herbarium non-lichenized fungi
Catalog #: MSC0250179
J. Dearness s.n. 09 May 1911
Peronospora claytoniae Farlow
Canada, Ontario, London;

Miami University, Willard Sherman Turrell Herbarium
Catalog #: 000274487
J. Dearness #3441 09 May 1911
Peronospora claytoniae Farl.
Canada, Ontario, London

University of Michigan Herbarium
Catalog #: 335674
J. Dearness #s. n. 09 May 1911
Peronospora claytoniae Farl.
Canada, Ontario, London.

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0026809
J. Dearness #s.n. 09 May 1911
Peronospora claytoniae Farl.
Canada, Ontario, London, London;