Rabenhorst, Fungi Eur. Exs.
G.L. Rabenhorst [1-2600]

USDA United States National Fungus Collections
Catalog #: BPI 997687
s.n.
Microstroma quercinum (Opiz) Niessl
Germany

University of North Carolina at Chapel Hill Herbarium
Catalog #: NCU-F-0025629
de Niessl, G. #s.n.
Microstroma quercinum (Opiz) Niessl
Austria, Steiermark, Graz, pr. Gratz