Brenckle, Fungi Dakot.
J.F. Brenckle [1-675, plus extras]

Washington State University, Charles Gardner Shaw Mycological Herbarium
Catalog #: WSP23202
O. A. Stevens s.n. 00 September 1914
Erysiphe cichoracearum DC.
United States, North Dakota, near Fargo

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00052015
O. A. Stevens s.n. 00 September 1914
Erysiphe cichoracearum DC.
United States, North Dakota, Near Fargo

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0015040
O. A. Stevens #s.n. 00 September 1914
Erysiphe cichoracearum DC.
United States, North Dakota, Near Fargo

Cornell University, Plant Pathology Herbarium
Catalog #: F.Dakotenses-0308a
O.A. Stevens s.n. 00 September 1914
Erysiphe cichoracearum DC.
United States, North Dakota, near Fargo

Brown University Herbarium
Catalog #: CBRU00000645
OA Stevens s.n. 00 September 1914
Erysiphe chicoracearum
United States, North Dakota, Cass, Fargo;

Purdue University, Kriebel Herbarium
Catalog #: PUL00022981
OA Stevens s.n. 00 September 1914
Erysiphe cichoracearum DC.
United States, North Dakota, Cass, near Fargo

USDA United States National Fungus Collections
Catalog #: BPI 922611
Stevens, O.A. #s. n. 00 September 1914
Erysiphe cichoracearum DC.
United States, North Dakota, near Fargo