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

USDA United States National Fungus Collections
Catalog #: BPI 1034448
s.n.
Peronospora densa Rabenh.

University of Illinois Herbarium
Catalog #: ILL00075966
de Thuemen s.n.
Peronospora densa Rabenhorst
Germany, Bavaria, Bayreuth; Bayreuth

USDA United States National Fungus Collections
Catalog #: BPI 187538
de Thumen s.n.
Plasmopara densa (Rabenh.) J. Schröt.
Germany, Bavaria, Bayreuth

Charles Gardner Shaw Mycological Herbarium, Washington State University
Catalog #: WSP35487
de Thumen s.n.
Peronospora densa f. alectorolophi-minoris Rabh.; (de Thumen)
Germany, Bavaria, Bayreuth

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00061934
de Thumen s.n.
Peronospora densa Rabenhorst
Germany, Bavaria, Bayreuth;