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

University of Illinois Herbarium
Catalog #: ILL00085545
de Thümen s.n.
Erysiphe martii Lév.
Czech Republic, Bohemia, Ústí nad Labem

USDA United States National Fungus Collections
Catalog #: BPI 564252
Thuemen s.n.
Erysiphe polygoni DC.
Czechoslovakia, Bohemia, Aussig