Petrak, Fl. Bohem. Morav. Exs. PilzeF. Petrak [1-2575]
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University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0066635
F. Petrak #s.n. 08 July 1919
Cercospora mercurialis Pass.
Czech Republic, Mähr-Weisskirchen: Podhorn
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USDA United States National Fungus Collections
Catalog #: BPI 438386
Petrak F. s.n. 08 July 1919
Cercospora mercurialis Pass.
Czechoslovakia, Moravia, Hranice (Maehr.-weisskirchen), Podhorn
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