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

University of Illinois Herbarium
Catalog #: ILL00084856
Kornicke s.n. 00 June 1873
Erysiphe graminis f. secales Lev.
Germany, Bonn; Poppelsdorfer Versuchsfelder

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00052407
Prof. Kornicke s.n. 00 June 1873
Erysiphe graminis DC.