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

Cornell University, Plant Pathology Herbarium
Catalog #: F.Dakotenses-0529
s.n.
Erysiphe communis (Wallr.) Schltdl.

USDA United States National Fungus Collections
Catalog #: BPI 922614
Bergman, H. F. #s. n. 17 October 1908
Erysiphe communis (Wallr.) Schltdl.
United States, North Dakota, Fargo

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00052321
H. F. Bergman s.n. 17 October 1908
Erysiphe communis (Wallr.) Schltdl.
United States, North Dakota, Fargo;

University of California Berkeley, University Herbarium
Catalog #: UC800374
H. F. Bergman s.n. 17 October 1908
Erysiphe pisi DC.
USA, North Dakota, Cass, Fargo

Washington State University, Charles Gardner Shaw Mycological Herbarium
Catalog #: WSP23447
H.F. Bergman s.n. 17 October 1908
Erysiphe communis (Wallr.) Schltdl.
United States, North Dakota, Fargo

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0015798
H.F. Bergman #s.n. 17 October 1908
Erysiphe polygoni DC.
United States, North Dakota, Fargo;

Brown University Herbarium
Catalog #: CBRU00000652
HF Bergman s.n. 17 October 1908
Erysiphe communis (Wallr.) Schltdl.
United States, North Dakota, Cass, Fargo;

Purdue University, Kriebel Herbarium
Catalog #: PUL00023250
HF Bergman s.n. 17 October 1908
Erysiphe communis (Wallr.) Schltdl.
United States, North Dakota, Cass, Fargo;