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

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0075476
s.n.
Peronospora verna Gäum.

USDA United States National Fungus Collections
Catalog #: BPI 990998
s.n.
Peronospora verna Gäum.
Czech Republic