F.K.A.E.J. de Thümen [1-750, plus extras]

University of Illinois Herbarium
Catalog #: ILL00085129
s.n.
Erysiphe graminis DC.

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00052406
von Thumen s.n. 00 June 1874
Erysiphe graminis DC.
Germany, Bayern, Bayreuth;