D. Griffiths [1-400, plus extras]

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0056373
T. A. Williams #s.n. 00 August 1898
Sphaerotheca humuli (DC.) Burrill
United States, Wyoming, Near Big Horn

Cornell University Plant Pathology Herbarium
Catalog #: Griff.,W.A.F.0162
Williams s.n. 00 August 1898
Sphaerotheca humuli (DC.) Burrill
United States, Wyoming, Near Big Horn

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00081122
Williams s.n. 00 August 1898
Sphaerotheca humuli (DC.) Burrill
United States, Wyoming, Near Big Horn.

Iowa State University, Ada Hayden Herbarium
Catalog #: ISC-F-0118867
Williams #s.n. 00 August 1898
Sphaerotheca collomiae U. Braun
USA, Wyoming

Purdue University, Kriebel Herbarium
Catalog #: PUL00022735
Williams and Griffiths s.n. 00 August 1898
Sphaerotheca humuli (DC.) Burrill
United States, Wyoming, Sheridan, Near Big Horn

Charles Gardner Shaw Mycological Herbarium, Washington State University
Catalog #: WSP11481
Williams; D. Griffiths s.n. 00 August 1898
Sphaerotheca humuli (DC.) Burrill
United States, Wyoming, near Big Horn

USDA United States National Fungus Collections
Catalog #: BPI 604100
Williams; Griffiths s.n. 00 August 1898
Sphaerotheca humuli (DC.) Burrill
United States, Wyoming, Big Horn near

USDA United States National Fungus Collections
Catalog #: BPI 796677
Williams; Griffiths s.n. 00 August 1898
Sphaerotheca humuli (DC.) Burrill
United States, Wyoming, Big Horn near