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

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00062126
Ad. Boller s.n.
Pernospora infestans

University of Illinois Herbarium
Catalog #: ILL00084760
Boller s.n.
Pernospora infestans Mntg.
Austria, Krems; Krems