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

University of Illinois Herbarium
Catalog #: ILL00085426
s.n.
Polyporus borealis Fr.

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00065949
Dr. Morthier s.n. 00 September 1878
Polyporus borealis Fr.
Switzerland, bei Neuchatel am Grunde