Wittrock, Nordstedt & Lagerheim, Algae Aquae Dulcis Exs.
Wittrock, V.B.; Nordstedt, C.F.O.; Lagerheim, G. [1201 - 1612]

University Herbarium, University of California, Berkeley
Catalog #: UC761317
W. Schmidle #s.n. 12 May 1894
Spirogyra varians (Hassall) Kützing
Germany, Baden-Württemberg, Karlsruhe, Waaghausel.