Thümen, Fungi Austr. Exs.
F.K.A.E.J. de Thümen [1-1200]

USDA United States National Fungus Collections
Catalog #: BPI 788779
de Thumen s.n.
Peronospora grisea (Unger) de Bary
Czechoslovakia, Teplitz, Bohemia

University of Illinois Herbarium
Catalog #: ILL00085739
de Thümen s.n.
Peronospora grisea f. veronicae arvensis De By.
Czech Republic, Bohemia, Teplitz; Teplitz

New York Botanical Garden
Catalog #: 1960305
ec69d4f4-3b04-4bf6-b8a6-1a05acef0e5f
F. K. A. E. J. von Thümen #s.n.
Peronospora grisea (Unger) Unger
Czech Republic, Teplitz, Bohemia [Bohemia is present day Czech Republic. It is now considered a province. Teplitz is modern day Teplice]