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

University of Illinois Herbarium
Catalog #: ILL00086158
de Thümen s.n.
Erysiphe communis f. ajacis
Czech Republic, Bohemia, Tetschen; Tetschen

USDA United States National Fungus Collections
Catalog #: BPI 564645
Thuemen #1241
Erysiphe polygoni DC.
Czechoslovakia, Bohemia