D. Griffiths [1-400, plus extras]

Cornell University Plant Pathology Herbarium
Catalog #: Griff.,W.A.F.0124
Williams s.n. 00 August 1898
Sphaerotheca humuli (DC.) Burrill
United States, Wyoming, Johnson, Buffalo;

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00081144
Williams s.n. 00 August 1898
Sphaerotheca humuli (DC.) Burrill
United States, Wyoming, Buffalo;

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0056359
Williams #s.n. 00 August 1898
Sphaerotheca humuli (DC.) Burrill
United States, Wyoming, Buffalo;

Iowa State University, Ada Hayden Herbarium
Catalog #: ISC-F-0119015
Williams #s.n. 00 August 1898
Sphaerotheca violae U. Braun
USA, Wyoming, Johnson, Buffalo;

Purdue University, Kriebel Herbarium
Catalog #: PUL00022687
Williams and Griffiths s.n. 00 August 1898
Sphaerotheca humuli (DC.) Burrill
United States, Wyoming, Johnson, Buffalo;

USDA United States National Fungus Collections
Catalog #: BPI 605890
Williams; Griffiths s.n. 00 August 1898
Sphaerotheca violae U. Braun
United States, Wyoming, Buffalo

USDA United States National Fungus Collections
Catalog #: BPI 796629
Williams; Griffiths s.n. 00 August 1898
Sphaerotheca humuli (DC.) Burrill
United States, Wyoming, Buffalo

Charles Gardner Shaw Mycological Herbarium, Washington State University
Catalog #: WSP11478
Williams; Griffiths s.n. 00 August 1808
Sphaerotheca humuli (DC.) Burrill
United States, Wyoming, Buffalo