F.K.A.E.J. de Thümen [1-2300, plus extras]

University of Illinois Herbarium
Catalog #: ILL00075909
de Thuemen s.n.
Oidium obtusum Thüm.
Germany, Bavaria, Bayreuth; Bayreuth

USDA United States National Fungus Collections
Catalog #: BPI 1034392
s.n.
Oidium obtusum Thüm.

USDA United States National Fungus Collections
Catalog #: BPI 409702
Thuemen s.n.
Oidium obtusum Thüm.
West Germany, Bavaria, Bayreuth

USDA United States National Fungus Collections
Catalog #: BPI 409703
Thuemen s.n.
Oidium obtusum Thüm.
West Germany, Bavaria, Bayreuth

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00040984
ThÙmen #s.n.
Oidium obtusum Thm.
Germany, Bayreuth, Bavaria