Petrak, Fl. Bohem. Morav. Exs. PilzeF. Petrak [1-2575]
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University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0075330
F. Petrak #s.n. 30 June 1924
Peronospora borealis Gäum.
Czech Republic, Leipnik in Mähren. Podhura
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USDA United States National Fungus Collections
Catalog #: BPI 787226
Petrak, F. s.n. 30 June 1924
Peronospora borealis Gäum.
Czechoslovakia, Leipnik, Moravia, Podhura
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