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

Michigan State University Herbarium non-lichenized fungi
Catalog #: MSC0221247
C. L. S. s.n. 01 September 1898
Erysiphe polygoni DC.
United States, Colorado, Sheephorn Divide, Middle Park

Cornell University Plant Pathology Herbarium
Catalog #: F.Columbiani-1439
C. L. Shear s.n. 01 September 1898
Erysiphe polygoni DC.
United States, Colorado, Grand, Middle Park; Sheephorn Divide

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00052509
C. L. Shear s.n. 01 September 1898
Erysiphe polygoni DC.
United States, Colorado, Grand, Middle Park; Sheephorn Divide

University of California Berkeley, University Herbarium
Catalog #: UC152441
C. L. Shear s.n. 01 September 1898
Erysiphe thuemenii U. Braun
USA, Colorado, Grand, Sheephorn Divide, Middle Park

Field Museum of Natural History
Catalog #: C0285447F
abe3d591-326f-4550-aab1-7521a3d0ff7d
C. L. Shear #s.n. 01 September 1898
Erysiphe polygoni DC. DC.
U.S.A., Colorado, Grand, Middle Park; Middle Park, Middle Park, Sheephorn Divide

Charles Gardner Shaw Mycological Herbarium, Washington State University
Catalog #: WSP2455
C.L. Shear s.n. 01 September 1898
Erysiphe polygoni DC.
United States, Colorado, Sheephorn Divide, Middle Park

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0015715
C.L. Shear #s.n. 01 September 1898
Erysiphe polygoni DC.
United States, Colorado, Middle Park; Sheephorn Divide

Iowa State University, Ada Hayden Herbarium
Catalog #: ISC-F-0084546
C.L.S #1439 01 September 1898
Erysiphe thuemenii U. Braun
USA, Colorado, Sheephorn Divide, Middle Park

Brown University Herbarium
Catalog #: CBRU00000739
CL Shear s.n. 01 September 1898
Erysiphe polygoni DC.
United States, Colorada, Grand, Middle Park;

Purdue University, Kriebel Herbarium
Catalog #: PUL00019664
CL Shear s.n. 01 September 1898
Erysiphe polygoni DC.
United States, Colorado, Grand, Middle Park; Sheephorn Divide