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

University of Illinois Herbarium
Catalog #: ILL00085009
s.n.
Caeoma cylindricum Link

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00058914
v. Thumen s.n. 00 October 1874
Melapsora populina
Germany