Petrak, Fl. Bohem. Morav. Exs. PilzeF. Petrak [1-2575]
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USDA United States National Fungus Collections
Catalog #: BPI 788353
Petrak, J. s.n. 28 May 1914
Peronospora effusa (Grev.) Rabenh.
Czechoslovakia, Mahr.-Weisskirchen Mil.-Oberrealschule
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