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

Cornell University, Plant Pathology Herbarium
Catalog #: CaliforniaF.00682
s.n.
Polyporus leucospongia Cooke

University of North Carolina at Chapel Hill Herbarium
Catalog #: NCU-F-0010213
Gibbons, Mary S. #s.n. 29 June 1942
Polyporus leucospongia Cooke
United States, California, Fresno, Huntington Lake

Iowa State University, Ada Hayden Herbarium
Catalog #: ISC-F-0097625
M.S. Gibbons #s.n. 29 June 1942
Polyporus leucospongia Cooke
USA, California, Fresno, Huntington Lake

University of California Berkeley, University Herbarium
Catalog #: UC671396
Mary R. Gibbons #175 29 June 1942
Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden
USA, California, Fresno, Huntington Lake.

University of Georgia, Julian H. Miller Mycological Herbarium
Catalog #: GAM00011801
Mary S. Gibbons s.n. 29 June 1942
Polyporus leucospongia Cooke
USA, California, Fresno, Huntington Lake

Michigan State University Herbarium
Catalog #: MSC0214065
Mary S. Gibbons s.n. 29 June 1942
Polyporus leucospongia Cooke
United States, California, Fresno, Huntington Lake