Petrak, Fl. Bohem. Morav. Exs. PilzeF. Petrak [1-2575]
University of Wisconsin-Madison Herbarium
F. Petrak #s.n. 31 October 1914
Erysiphe graminis DC.
Czech Republic, Mähr-Weisskirchen: Hrabuvka
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USDA United States National Fungus Collections
Petrak F. s.n. 31 October 1914
Oidium monilioides (Nees) Link
Czechoslovakia, Moravia, Hranice (Maehr.-weisskirchen), Hrabuvka
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