Economic Fungi #357 b.

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

New York Botanical Garden
Catalog #: 1960192
742c9cdd-c93e-4395-bf4e-0127956eedc2
H. L. Merrow #s.n. 04 July 1892
Peronospora effusa (Grev.) Tul.
United States of America, Michigan, Washtenaw Co., Ann Arbor