Petrak, Fl. Bohem. Morav. Exs. PilzeF. Petrak [1-2575]
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University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0073372
F. Petrak #s.n. 20 May 1923
Peronospora effusa (Greville) Rabenhorst
Czech Republic, Mähr-Weisskirchen: Jesernik
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USDA United States National Fungus Collections
Catalog #: BPI 787222
Petrak, F. s.n. 20 May 1923
Peronospora boni-henrici Gäum.
Czechoslovakia, Mahr.-Weisskirchen, Jesernik
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