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

University of Illinois Herbarium
Catalog #: ILL00086059
de Thümen s.n.
Erysiphe linkii f. ptarmicae Lev.
Czech Republic, Bohemia, Konigswald; Konigswald

USDA United States National Fungus Collections
Catalog #: BPI 559308
Thuemen s.n.
Erysiphe cichoracearum DC.
Czechoslovakia, Bohemia, Koenigswald