C. Roumeguere [1-7400]
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USDA United States National Fungus Collections
Catalog #: BPI 1012243
s.n.
Oidium erysiphoides Fr.
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University of Illinois Herbarium
Catalog #: ILL00219731
Anna Ferry s.n. 20 August 1890
Oidium erysiphoides f. potentillae
France, Alsace (Moselle), Pentes du Donon,
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