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

University of Illinois Herbarium
Catalog #: ILL00085162
s.n.
Psilospora quercus Rabenh.

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00066991
Thumen s.n. 00 April 1876
Psilospora quercus Rabenh.
Germany, Bayern: bei Bayreuth