Petrak, Fl. Bohem. Morav. Exs. PilzeF. Petrak [1-2575]
University of Wisconsin-Madison Herbarium
s.n.
Polyporus umbellatus (Pers.) Fr.
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USDA United States National Fungus Collections
s.n.
Rhabdospora nigrificans Bubák
Czech Republic
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University of Wisconsin-Madison Herbarium
F. Petrak #s.n. 25 January 1914
Rhabdospora nigrificans Bubák
Czech Republic, Mähr-Weisskirchen: Ohrensdorf
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USDA United States National Fungus Collections
Petrak F. s.n. 25 January 1914
Rhabdospora nigrifacta Bubák
Czechoslovakia, Moravia, Hranice (Maehr.-weisskirchen), Stritez Nad Ludinou (Ohrensdorf)
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