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

Cornell University, Plant Pathology Herbarium
Catalog #: CaliforniaF.00327
s.n.
Microsphaera alni (DC.) G. Winter

Washington State University, Charles Gardner Shaw Mycological Herbarium
Catalog #: WSP35277
J. P. Tracy s.n. 28 September 1930
Microsphaeria alni
United States, California, Humboldt, Big Lagoon

Michigan State University Herbarium
Catalog #: MSC0212967
J. P. Tracy s.n. 28 September 1930
Microsphaera alni (DC.) G. Winter
United States, California, Humboldt, Big Lagoon

University of California Berkeley, University Herbarium
Catalog #: UC538810
J. P. Tracy #9200 28 September 1930
Microsphaera hommae U. Braun
USA, California, Humboldt, Big Lagoon, Humboldt County

Field Museum of Natural History
Catalog #: C0285805F
J.P. Tracy #s.n. 28 September 1930
Microsphaera alni (DC.) G. Winter
USA, California, Humboldt, Big Lagoon, Humboldt Lagoons State Park

Iowa State University, Ada Hayden Herbarium
Catalog #: ISC-F-0087720
J.P. Tracy #s.n. 28 September 1930
Microsphaera hommae U. Braun
USA, California, Humboldt, Big Lagoon

University of North Carolina at Chapel Hill Herbarium
Catalog #: NCU-F-0015370
Tracy, Joseph P. #327 28 September 1930
Microsphaera alni (DC.) G. Winter
United States, California, Humboldt, Big Lagoon