C.G. Shaw and W.B. Cooke [1-98, plus extras]

USDA United States National Fungus Collections
Catalog #: BPI 1023892
s.n.
Claviceps nigricans Tul.
United States, Montana

University of California Berkeley, University Herbarium
Catalog #: UC976204
W. N. Suksdorf #s.n. 14 April 1921
Claviceps nigricans Tul.
USA, Montana, Park, Suksdorfs Gulch.

University of Georgia, Julian H. Miller Mycological Herbarium
Catalog #: GAM00001352
Wilhelm N. Suksdorf s.n. 14 August 1921
Claviceps nigricans Tul.
USA, Montana, Park, Suksdorf's Gulch

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0003663
Wilhelm N. Suksdorf #s.n. 14 August 1921
Claviceps nigricans Tul.
United States, Montana, Park, Suksdorfs Gulch