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

USDA United States National Fungus Collections
Catalog #: BPI 786784
de Thumen s.n.
Peronospora arborescens (Berk.) de Bary
Czechoslovakia, Bohemia, Teplitz

University of Illinois Herbarium
Catalog #: ILL00085949
de Thümen s.n.
Peronospora arborescens (Berk.) de Bary
Czech Republic, Bohemia, Teplitz; Teplitz

Chrysler Herbarium - Mycological Collection
Catalog #: CHRB-F-0013134
De Thumen s.n.
Peronospora arborescens (Berk.) de Bary
Czech Republic, Bohemia

New York Botanical Garden
Catalog #: 1959602
6f46feeb-f1ff-4788-afb4-3fafdd134295
F. K. A. E. J. von Thümen #s.n.
Peronospora arborescens (Berk.) Casp.
Czech Republic, Teplitz, Bohemia [Bohemia is present day Czech Republic. It is now considered a province. Teplitz is modern day Teplice]