Petrak, Fl. Bohem. Morav. Exs. PilzeF. Petrak [1-2575]
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USDA United States National Fungus Collections
Catalog #: BPI 654932
Petrak F. s.n. 05 September 1912
Helotium humuli (Lasch) De Not.
Czechoslovakia, Hranice (Maehr.-weisskirchen), Svrcov
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