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

University of Illinois Herbarium
Catalog #: ILL00084949
Thumen s.n. 00 July 1874
Exoascus populi f. populi nigrae
Germany, Bavaria, Beyreuth; Beyreuth

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00041912
Thumen #s.n. 00 July 1874
Exoascus populi ThÙm.
Germany, Bayreuth