Petrak, Fl. Bohem. Morav. Exs. PilzeF. Petrak [1-2575]
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University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0072956
s.n.
Melanconium populinum Peck
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USDA United States National Fungus Collections
Catalog #: BPI 402529
Petrak F. s.n. 21 August 1922
Melanconium populinum Peck
Czechoslovakia, Moravia, Hranice (Maehr.-weisskirchen), Skalicka
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