Mycotheca Marchica #3671
P. Sydow and W. Zopf [1-4900]
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USDA United States National Fungus Collections
Catalog #: BPI 1057476
P. Sydow #s. n. 00 September 1892
Erysiphe communis (Wallr.) Schltdl.
Germany, Berlin, Klein Machnow
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