Anonymous, Calif. Fungi
Herbarium of the University of California. [1- ? 1425]

Cornell University Plant Pathology Herbarium
Catalog #: CaliforniaF.00337
s.n.
Sphaerotheca humuli (DC.) Burrill

USDA United States National Fungus Collections
Catalog #: BPI 604089
Copeland E. B. s.n. 29 June 1931
Sphaerotheca humuli (DC.) Burrill
United States, Wyoming, Jonesville, Butte Co. near

USDA United States National Fungus Collections
Catalog #: BPI 948044
Copeland E. B. #s.n. 29 June 1931
Sphaerotheca humuli (DC.) Burrill
United States, California, Butte, Near Jonesville

Michigan State University Herbarium non-lichenized fungi
Catalog #: MSC0212977
E. B. Copeland s.n. 29 June 1931
Sphaerotheca humili
United States, California, Butte, Near Jonesville

Field Museum of Natural History
Catalog #: C0286367F
37cae647-e672-47fd-ab9a-c55821eb01b2
E. B. Copeland #s.n. 29 June 1931
Sphaerotheca humuli (DC.) Burrill (DC.) Burrill
U.S.A., California, Butte, Near Jonesville

Iowa State University, Ada Hayden Herbarium
Catalog #: ISC-F-0118871
E.B. Copeland #s.n. 29 June 1931
Sphaerotheca collomiae U. Braun
USA, California, Butte, Near Jonesville

Charles Gardner Shaw Mycological Herbarium, Washington State University
Catalog #: WSP35281
E.Bartholomew; E. B. Copeland s.n. 29 June 1931
Sphaerotheca humuli (DC.) Burrill
United States, California, Butte, near Jonesville