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

University of Illinois Herbarium
Catalog #: ILL00085287
s.n.
Oidium erysiphoides Fr.

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00061054
Prof. Passerini s.n. 00 September 1876
Oidium erysiphoides Fr.
Italy