Poelt & Scheuer, Reliqu. Petrak.Institut für Systematische Botanik der Universität [1-2859]
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USDA United States National Fungus Collections
Catalog #: BPI 1110962
Bornmueller J. s.n. 00 October 1943
Erysiphe cichoracearum DC.
Germany, Thueringen, Ettersberg near Weimar
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