Petrak, Fl. Bohem. Morav. Exs. PilzeF. Petrak [1-2575]
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University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0073890
s.n.
Mycosphaerella polia Petr.
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USDA United States National Fungus Collections
Catalog #: BPI 609242
Petrak F. s.n. 23 June 1924
Mycosphaerella polia Petr.
Czechoslovakia, Maerh.-Weisskirchen, Jesernik
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