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

University of Illinois Herbarium
Catalog #: ILL00084953
Thumen s.n. 00 October 1874
Microstoma quercinum
Germany, Bavaria, Bayreuth; Bayreuth

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00059967
v. Thumen s.n. 00 October 1874
Microstroma quercinum (Opiz) Niessl
Germany, Bayern: bei Bayreuth