A.B. Seymour and F.S. Earle [1-550, plus extras]

University of Michigan Herbarium
Catalog #: 335623
A. B. Seymour #s. n. 08 June 1886
Peronospora calotheca de Bary
USA, Wisconsin, Dane, Madison.

USDA United States National Fungus Collections
Catalog #: BPI 920241
Seymour, A. B. s.n. 08 June 1886
Peronospora calotheca de Bary
United States, Wisconsin, Dane, Madison