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

USDA United States National Fungus Collections
Catalog #: BPI 1020480
s.n.
Peronospora parasitica (Persoon) de Bary
United States

USDA United States National Fungus Collections
Catalog #: BPI 1020481
s.n.
Peronospora parasitica (Persoon) de Bary
United States

Cornell University, Plant Pathology Herbarium
Catalog #: S.E.,Econ.F.0258
A. B. Seymour s.n. 13 April 1882
Peronospora parasitica (Persoon) de Bary
United States, Illinois, Union, Cobden;