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

Cornell University, Plant Pathology Herbarium
Catalog #: CaliforniaF.00902
s.n.
Anserina Velen.

University of California Berkeley, University Herbarium
Catalog #: UC1028953
J. P. Tracy #13265 28 June 1934
Marssonina potentillae (Desm.) Magnus
USA, California, Humboldt, Salmon Creek Valley, South end of Humboldt Bay

Louisiana State University, Bernard Lowy Mycological Herbarium
Catalog #: LSU00176224
Joseph P. Tracy #13265 28 June 1934
Marssonina potentillae (Desm.) Magnus
United States, California, Humboldt, Salmon Creek Valley, south end of Humboldt Bay

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0022316
Joseph P. Tracy #13265 28 June 1934
Marssonina potentillae (Desm.) Magnus
United States, California, Humboldt, Salmon Creek Valley, south end of Humboldt Bay