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-0359
s.n.
Sphaerotheca

Michigan State University Herbarium
Catalog #: MSC0252130
W. Migula s.n. 23 September 1928
Sphaerotheca humuli fuliginea
Germany, Thuringia, Eisenach; Schloberg

Field Museum of Natural History
Catalog #: C0258043F
W. Migula #s.n. 23 September 1928
Sphaerotheca humuli (DC.) Burrill
Germany, Thuringia, Eisenach, Eisenach; Eisenach, Schlossberg