Thümen, Fungi Austr. Exs.
F.K.A.E.J. de Thümen [1-1200]

University of Illinois Herbarium
Catalog #: ILL00085878
de Thümen s.n.
Phyllachora betulae Fckl.
Czech Republic, Bohemia, Konigswald; Konigswald

Rutgers University, Chrysler Herbarium - Mycology Collection
Catalog #: CHRB-F-0015037
de Thumen s.n.
Phyllachora betulina (Fr.) Fuckel
Czech Republic, Bohemia

USDA United States National Fungus Collections
Catalog #: BPI 640971
Thuemen s.n.
Euryachora betulina (Fr.) J. Schröt.
Czechoslovakia, Bohemia