Zahlbruckner, Krypt. Exs.A. Zahlbruckner [401-2600, plus extras]
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USDA United States National Fungus Collections
Catalog #: BPI 409724
Keissler C. de s.n. 00 October 0000
Oidium quercinum Thüm.
Austria, Lower Austria, in Irenental, near Tullnerbach
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