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

USDA United States National Fungus Collections
Catalog #: BPI 1054465
P. Sydow #s. n. 00 October 1884
Erysiphe communis (Wallr.) Schltdl.
Germany, Grunswald, Berlin

Iowa State University, Ada Hayden Herbarium
Catalog #: ISC-F-0125188
P. Sydow #s.n. 00 October 1884
Erysiphe pisi var. cruchetiana (S. Blumer) U. Braun
, Greenwald b/ Berlin