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

University of Illinois Herbarium
Catalog #: ILL00085252
s.n.
Microstroma pallidum Niessl

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00059966
Dr. Gronland s.n.
Microstroma pallidum Niessl
Germany, Brandenburg, bei Dahme