Mycotheca Marchica #653
P. Sydow and W. Zopf [1-4900]
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USDA United States National Fungus Collections
Catalog #: BPI 1054459
P. Sydow #s. n. 00 September 1884
Erysiphe communis (Wallr.) Schltdl.
Germany, Wilmersdorf, Berlin
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Iowa State University, Ada Hayden Herbarium
Catalog #: ISC-F-0125194
P. Sydow #s.n. 00 September 1884
Erysiphe polygoni DC.
, Wilmersdorf b/ Berlin
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