Charles Gardner Shaw Mycological Herbarium, Washington State University
F. Petrak s.n. 28 September 1920
Plasmopara nivea (Unger) J. Schröt.
Czech Republic?, West-Boskesten: Unt. Becrub (West Beskids, in Carpathian mountains)
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USDA United States National Fungus Collections
Petrak, F. s.n. 28 September 1920
Plasmopara nivea (Unger) J. Schröt.
Europe, West Beskids, Beceva
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