Migula, Krypt. Germ., Austr. Helv. Exs. [Algen]
Migula, E.F.A.W. [1 - 300]

Drexel University, Academy of Natural Sciences
Catalog #: PH00348296
W. Migula #296 11 August 1930
Spirogyra porticalis (O.F.Müller) Dumortier
Germany, Eisenach, Thuringen

Miami University
Catalog #: 000163850
W. Migula #s.n. 11 August 1930
Spirogyra porticalis (O.F.Müller) Dumortier
Germany, Eisenach, Thuringen

University of Michigan
Catalog #: 736719
W. Migula #s.n. 11 August 1930
Spirogyra porticalis (O.F.Müller) Dumortier
Germany, Eisenach, Thuringen

Michigan State University
Catalog #: MSC0184797
W. Migula #s.n. 11 August 1930
Spirogyra porticalis (O.F.Müller) Dumortier
Germany, Knopfelsteiche, Eisenach