Petrak, Mycoth. Carp.
Petrak, F. [1-475]
IndExs #641513049

Charles Gardner Shaw Mycological Herbarium, Washington State University
Catalog #: WSP38928
F. Petrak s.n. 28 September 1920
Plasmopara nivea (Unger) J. Schröt.
Czech Republic?, West-Boskesten: Unt. Becrub (West Beskids, in Carpathian mountains)

USDA United States National Fungus Collections
Catalog #: BPI 188417
Petrak, F. s.n. 28 September 1920
Plasmopara nivea (Unger) J. Schröt.
Europe, West Beskids, Beceva