Petrak, Fl. Bohem. Morav. Exs. PilzeF. Petrak [1-2575]
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University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0073962
F. Petrak #s.n. 00 October 1925
Peronospora effusa (Greville) Rabenhorst
Czech Republic, Mährisch-Weisskirchen: Garten
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USDA United States National Fungus Collections
Catalog #: BPI 791061
Petrak, F. s.n. 00 October 1925
Peronospora spinaciae Laubert
Czechoslovakia, Mahr.-Weisskirchen garden
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