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

University of Illinois Herbarium
Catalog #: ILL00086156
de Thümen s.n.
Erysiphe communis f. geranii pratensis
Czech Republic, Bohemia, Teplitz; Teplitz

USDA United States National Fungus Collections
Catalog #: BPI 564730
Thuemen s.n.
Erysiphe polygoni DC.
Czechoslovakia, Bohemia