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

Cornell University, Plant Pathology Herbarium
Catalog #: CaliforniaF.00329
s.n.
Microsphaera Lév.

Michigan State University Herbarium
Catalog #: MSC0212969
J. P. Tracy s.n. 17 August 1930
Microsphaera alni (DC.) G. Winter
United States, California, Humboldt, Big Lagoon

University of California Berkeley, University Herbarium
Catalog #: UC538831
J. P. Tracy #9159 17 August 1930
Microsphaera vaccinii Peck
USA, California, Humboldt, Big Lagoon

Field Museum of Natural History
Catalog #: C0285804F
J.P. Tracy #s.n. 17 August 1930
Microsphaera alni (DC.) G. Winter
USA, California, Humboldt, Big Lagoon, Humboldt Lagoons State Park

Iowa State University, Ada Hayden Herbarium
Catalog #: ISC-F-0087591
J.P. Tracy #s.n. 17 August 1930
Microsphaera vaccinii (Schwein.) Cooke & Peck
USA, California, Humboldt, Big Lagoon

University of North Carolina at Chapel Hill Herbarium
Catalog #: NCU-F-0015481
Tracy, Joseph P. #s.n. 17 August 1930
Microsphaera alni (DC.) G. Winter
United States, California, Humboldt, Big Lagoon