P. Sydow and W. Zopf [1-4900]

USDA United States National Fungus Collections
Catalog #: BPI 1053947
P. Sydow #s. n. 00 October 1880
Erysiphe horridula (Wallr.) Rabenh.
Germany, Berlin Botanical Garden

Iowa State University, Ada Hayden Herbarium
Catalog #: ISC-F-0125160
P. Sydow #s.n. 21 September 1880
Erysiphe cynoglossi (Wallr.) U. Braun
Germany, Berlin, Berlin; im bot. Garten. Berlin.