P. Sydow and W. Zopf [1-4900]
USDA United States National Fungus Collections
P. Sydow #s. n. 00 October 1884
Erysiphe communis (Wallr.) Schltdl.
Germany, Grunswald, Berlin
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Iowa State University, Ada Hayden Herbarium
P. Sydow #s.n. 00 October 1884
Erysiphe pisi var. cruchetiana (S. Blumer) U. Braun
, Greenwald b/ Berlin
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