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

University of Illinois Herbarium
Catalog #: ILL00085107
von Thumen s.n.
Sphaerella maculaeformis (Pers.) Auersw.

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00060469
von Thumen s.n.
Mycosphaerella maculaeformis
Germany, Bayern, bei Bayreuth