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

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00081227
A. A. Heller s.n. 02 May 1903
Sphaerotheca humuli fulignea
United States, California, Monterey, Sand Hills near Monterey