P. Sydow and W. Zopf [1-4900]
Chrysler Herbarium - Mycological Collection
Catalog #: CHRB-F-0011812
P. Sydow s.n. 00 February 1889
Microsphaera alni (DC.) G. Winter
Germany, Berlin;
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USDA United States National Fungus Collections
P. Sydow #s. n. 00 July 1889
Microsphaera alni (DC.) G. Winter
Germany, Klein Machnow, Berlin
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