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;

USDA United States National Fungus Collections
Catalog #: BPI 1056467
P. Sydow #s. n. 00 July 1889
Microsphaera alni (DC.) G. Winter
Germany, Klein Machnow, Berlin