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-0187
s.n.
Erysiphe R. Hedw. ex DC.

USDA United States National Fungus Collections
Catalog #: BPI 561174
Matouschek s.n. 00 September 1904
Erysiphe cichoracearum DC.
Czechoslovakia, North Bohemia, Jeschkengebirge

Michigan State University Herbarium non-lichenized fungi
Catalog #: MSC0253196
Matouschek s.n. 00 September 1904
Erysiphe cichoriarum
Czech Republic, Jeschkengebirge;

Academy of Natural Sciences of Drexel University
Catalog #: PH00315431
Prof. Matouschek #s.n 00 September 1904
Erysiphe sordida L. Junell
Czech Republic, Nordbohmen, Jeschkengebirge