D. Griffiths [1-400, plus extras]

Cornell University Plant Pathology Herbarium
Catalog #: Griff.,W.A.F.0129
Williams s.n. 00 August 1976
Sphaerotheca humuli (DC.) Burrill
United States, Wyoming, Johnson, Buffalo; French Creek

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00081230
Williams s.n. 00 August 1897
Sphaerotheca humuli fulignea
United States, Wyoming, French Creek, near Buffalo

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0056178
Williams #s.n. 00 August 1897
Sphaerotheca humuli var. fuliginea (Schltdl.) E.S. Salmon
United States, Wyoming, French Creek near Buffalo

Iowa State University, Ada Hayden Herbarium
Catalog #: ISC-F-0118969
Williams #s.n. 00 August 1897
Sphaerotheca fusca (Fr.) S. Blumer
USA, Wyoming, Near Buffalo, French Creek

Purdue University, Kriebel Herbarium
Catalog #: PUL00022686
Williams and Griffiths s.n. 00 August 1897
Sphaerotheca humuli fuliginea
United States, Wyoming, Johnson, French Creek near Buffalo

USDA United States National Fungus Collections
Catalog #: BPI 604369
Williams; Griffiths s.n. 00 August 1897
Sphaerotheca humuli var. fuliginea (Schltdl.) E.S. Salmon
United States, Wyoming, French Creek, near Buffalo

USDA United States National Fungus Collections
Catalog #: BPI 796634
Williams; Griffiths s.n. 00 August 1897
Sphaerotheca humuli (DC.) Burrill
United States, Wyoming, Buffalo French Creek, near

Charles Gardner Shaw Mycological Herbarium, Washington State University
Catalog #: WSP11549
Williams; Griffiths s.n. 00 August 1897
Sphaerotheca humuli var. fuliginea (DC.) Burr.; ((Schl.) Salm.)
United States, Wyoming, French Creek near Buffalo