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.

USDA United States National Fungus Collections
Catalog #: BPI 564528
Migula W. s.n. 05 October 1921
Erysiphe polygoni DC.
Germany, Eisenach, Zaeunen

USDA United States National Fungus Collections
Catalog #: BPI 986627
Migula W. s.n. 05 October 1921
Erysiphe polygoni DC.
Germany, Eisenach, Zaeunen

Michigan State University Herbarium non-lichenized fungi
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