F.K.A.E.J. de Thümen [1-2300, plus extras]

University of Illinois Herbarium
Catalog #: ILL00076159
de Thuemen s.n.
Peronospora nivea de Bary
Germany, Bavaria, Bayreuth; Bayreuth

USDA United States National Fungus Collections
Catalog #: BPI 188415
de Thumen s.n.
Plasmopara nivea (Unger) J. Schröt.
Germany, Bavaria, Beyreuth

Charles Gardner Shaw Mycological Herbarium, Washington State University
Catalog #: WSP35507
de Thumen s.n.
Plasmopara nivea (Unger) J. Schröt.
Germany, Bavaria: Bayreuth

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00062195
de Thumen s.n.
Peronospora nivea de Bary
Germany, Bavaria, Bayreuth;

USDA United States National Fungus Collections
Catalog #: BPI 1034636
Thumen #s. n.
Peronospora nivea Unger
Germany, Bavaria: Bayreuth in Petroselini