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

University of Illinois Herbarium
Catalog #: ILL00085052
s.n.
Apiosporium tremulicola Fuckel

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00043825
Thumen s.n. 00 August 1873
Aposphaeria tremulicolum
Czech Republic, Bohmen: bei Teplitz