H. Sydow and P. Sydow [1-3000]

Cornell University, Plant Pathology Herbarium
Catalog #: Syd.,Myc.germ.2897
s.n.
Peronospora ornithopi Gäumann
Germany

USDA United States National Fungus Collections
Catalog #: BPI 1028420
s.n.
Peronospora ornithopi Gäum.
Germany

University of Michigan Herbarium
Catalog #: 336071
A. Ludwig #s. n. 21 August 1930
Peronospora ornithopi Gäumann
Germany, Freistaat Hamburg: bei Stickenbüttel bei Cuxhaven

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0075548
A. Ludwig #s.n. 21 August 1930
Peronospora ornithopi Gäum.

USDA United States National Fungus Collections
Catalog #: BPI 789668
Ludwig, A. s.n. 21 August 1930
Peronospora ornithopi Gäum.
Germany, Freistaat Hamburg, Stickenbuttel, Cuxhaven