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

Cornell University, Plant Pathology Herbarium
Catalog #: CaliforniaF.01325
s.n.
Xanthoria polycarpa (Hoffm.) Rieber

USDA United States National Fungus Collections
Catalog #: BPI 949035
s.n.
Xanthoria polycarpa (Hoffm.) Rieber
United States, California

Washington State University, Charles Gardner Shaw Mycological Herbarium
Catalog #: WSP58352
Ronald Russo s.n. 22 January 1968
Xanthoria polycarpa (Hoffm.) Rieber
United States, California, Contra Costa, Grizzly Peak Boulevard, Tilden Regional Park, Berkeley Hills