Petrak, Fl. Bohem. Morav. Exs. PilzeF. Petrak [1-2575]
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University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0003224
F. Petrak #s.n.
Bremia lactucae Regel
Czech Republic, Mähr-Weisskirchen Felder
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USDA United States National Fungus Collections
Catalog #: BPI 786220
Petrak, F. s.n. 24 August 1924
Bremia tulasnei (H. Hoffm.) Syd.
Czechoslovakia, Mahr.-Weisskirchen, Felder
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