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

University of Illinois Herbarium
Catalog #: ILL00085011
s.n.
Sclerotium clavus f. phragmitis

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00078456
v. Thumen s.n. 00 August 1874
Sclerotium clavus f. Phragmitis
Germany