F.K.A.E.J. de Thümen [1-750, plus extras]

USDA United States National Fungus Collections
Catalog #: BPI 1033776
s.n.
Peronospora obovata Bonord.

University of Illinois Herbarium
Catalog #: ILL00084970
Thumen s.n. 00 July 1874
Peronospora obovata f. spergulae arvensis
Germany, Bavaria, Bayreuth; Bayreuth

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00062205
v. Thumen s.n. 00 July 1874
Peronospora obovata Bonorden
Germany, Bayern, bei Bayreuth