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

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00062197
H. L. Merrow s.n. 12 May 1884
Peronospora obducens J. Schröter
United States, Michigan, Ann Arbor;

Michigan State University Herbarium
Catalog #: MSC0214834
H. L. Merrow s.n. 12 May 1884
Peronospora obducens J. Schröter
United States, Michigan, Ann Arbor;

Miami University, Willard Sherman Turrell Herbarium
Catalog #: 000274580
H. L. Merrow #A7b 12 May 1884
Peronospora obducens J. Schröter
United States, Michigan, Washtenaw, Ann Arbor

Washington State University, Charles Gardner Shaw Mycological Herbarium
Catalog #: WSP28992
H.L. Merrow s.n. 12 May 1884
Peronospora obducens J. Schröter
United States, Michigan, Washtenaw, Ann Arbor