Migula, Krypt. Germ., Austr. Helv. Exs. [Pilze]
E.F.A.W. Migula [1-425]

Cornell University, Plant Pathology Herbarium
Catalog #: Mig.,C.G,A.H-0234
s.n.
Erysiphe R. Hedw. ex DC.

Michigan State University Herbarium
Catalog #: MSC0253241
W. Migula s.n. 05 October 1921
Erysiphe polygoni DC.
Germany, Eisenach; Zaunen

Academy of Natural Sciences of Drexel University
Catalog #: PH00315430
W. Migula #s.n 05 October 1921
Erysiphe heraclei DC.
Germany, Thuringia, Eisenach, an Zaunen