Mycotheca Marchica #2658
P. Sydow and W. Zopf [1-4900]
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USDA United States National Fungus Collections
Catalog #: BPI 1056463
P. Sydow #s. n. 00 July 1889
Erysiphe umbelliferarum (Lév.) de Bary
Germany, Klein Machnow, Berlin
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