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

Cornell University, Plant Pathology Herbarium
Catalog #: CaliforniaF.01105
s.n.
Sphaerotheca

USDA United States National Fungus Collections
Catalog #: BPI 948815
s.n.
Sphaerotheca humuli (DC.) Burrill
United States, California

Field Museum of Natural History
Catalog #: C0286356F
00468434-6043-4d80-90ef-3cdf60ce7f5f
H. E. Parks #5171 00 September 1934
Sphaerotheca humuli (DC.) Burrill (DC.) Burrill
U.S.A., California, Del Norte, Darlingtonia Lodge, Smith River

University of Florida Herbarium
Catalog #: FLAS-F-46194
H. E. Parks #5171 00 September 1934
Sphaerotheca humuli (DC.) Burrill
United States, California, Del Norte, Smith River Lodge

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0056018
H. E. Parks #5171 00 September 1934
Sphaerotheca humuli (DC.) Burrill
United States, California, Del Norte, Smith River Lodge

Washington State University, Charles Gardner Shaw Mycological Herbarium
Catalog #: WSP44646
H.E. Parks s.n. 00 September 1934
Sphaerotheca humuli (DC.) Burrill
United States, California, Del Norte, Smith River Lodge

Michigan State University Herbarium
Catalog #: MSC0219046
H.E. Parks #5171 00 September 1934
Sphaerotheca humuli (DC.) Burrill
United States, California, Del Norte, Smith River Lodge

University of Georgia, Julian H. Miller Mycological Herbarium
Catalog #: GAM00008902
Harold E. Parks s.n. 00 September 1934
Sphaerotheca humuli (DC.) Burrill
USA, California, Del Norte, Smith River Lodge