Petrak, Fl. Bohem. Morav. Exs. PilzeF. Petrak [1-2575]
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Wisconsin State Herbarium, Fungi
Catalog #: WIS-F-0073499
s.n.
Peronospora obovata Bonord.
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USDA United States National Fungus Collections
Catalog #: BPI 789632
Petrak, F. s.n. 02 August 1922
Peronospora obovata Bonord.
Czechoslovakia, Mahr.-Weisskirchen, Hrabuvka
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