Petrak, Fl. Bohem. Morav. Exs. PilzeF. Petrak [1-2575]
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Wisconsin State Herbarium, Fungi
Catalog #: WIS-F-0082275
s.n.
Sclerophoma betulae Died.
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USDA United States National Fungus Collections
Catalog #: BPI 359157
Petrak J. s.n. 14 December 1918
Sclerophoma betulae Died.
Czechoslovakia, Hranice (Maehr.-weisskirchen) Military Academy
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