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

USDA United States National Fungus Collections
Catalog #: BPI 1035735
s.n.
Peronospora pygmaea (Unger) Unger

USDA United States National Fungus Collections
Catalog #: BPI 784957
de Thumen s.n. 00 May 1874
Plasmopara pygmaea (Unger) J. Schröt.
Germany, Bavaria, Bayreuth

Charles Gardner Shaw Mycological Herbarium, Washington State University
Catalog #: WSP35687
de Thumen s.n. 00 May 1874
Peronospora pygmaea f. anemone-nemerosa de By.; (de Thumen)
Germany, Bavaria: Bayreuth

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00062310
de Thumen s.n. 00 May 1874
Peronospora pygmaea (Unger) Unger
Germany, Bavaria, Bayreuth;

University of Illinois Herbarium
Catalog #: ILL00077283
de Thumen #s.n. 00 May 1874
Peronospora pygmaea (Unger) Unger
Germany, Bavaria: Bayreuth