Charles Gardner Shaw Mycological Herbarium, Washington State University
F. Petrak s.n. 24 May 1921
Plasmopara densa (Rabenhorst) J. Schröter
Germany, Maehrische--schlesische Beskidan: Vsetin
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USDA United States National Fungus Collections
Petrak, F. s.n. 24 May 1927
Plasmopara densa (Rabenh.) J. Schröt.
Czechoslovakia, Moravia
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