Petrak, Fl. Bohem. Morav. Exs. Pilze
F. Petrak [1-2575]

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0075503
s.n.
Peronospora cheiranthi Gäum.

USDA United States National Fungus Collections
Catalog #: BPI 787520
Petrak, F. s.n. 02 August 1924
Peronospora cheiranthi Gäum.
Czechoslovakia, Mahr.-Weisskirchen garden