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

University of Illinois Herbarium
Catalog #: ILL00086094
de Thümen s.n.
Oidium aceris Rabenh.
Czech Republic, Bohemia, Teplitz; Teplitz

USDA United States National Fungus Collections
Catalog #: BPI 409289
Thuemen s.n.
Oidium aceris Rabenh.
Czechoslovakia, formerly Austria Bohemia, Teplice

Rutgers University, Chrysler Herbarium - Mycology Collection
Catalog #: CHRB-F-0026416
Unknown #s.n.
Oidium aceris Rabenh.
Czech Republic, Bohemia, Bohemia; Teplitz