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-0005
s.n.
Didymium difforme (Persoon) Gray

Michigan State University Herbarium non-lichenized fungi
Catalog #: MSC0253023
Hans Schinz s.n.
Didymium difforme (Persoon) Gray
Switzerland, Zurich;

USDA United States National Fungus Collections
Catalog #: BPI 001304
Migula W. s.n. 28 August 1931
Uromyces astragali (Opiz) Sacc.
East Germany, Thuringia, Eisenach Burschenschaftsdenkmal

Academy of Natural Sciences of Drexel University
Catalog #: PH00314155
Prof. Hans. Schinz #s.n
Didymium difforme (Persoon) Gray
Switzerland, Zürich, Zürich, Zurich