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

University of Illinois Herbarium
Catalog #: ILL00084815
Thumen s.n. 00 September 1873
Oidium erysophoides f. rapae
Germany, Nassau, Bierstadt; bei Wiesbaden

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00061067
von Thumen s.n. 00 September 1873
Oidium erysiphoides f. rapae
Germany