Wittrock & Nordstedt, Algae Aquae Dulcis Exs.
Wittrock, V.B.; Nordstedt, C.F.O. [1 - 1200]

University Herbarium, University of California, Berkeley
Catalog #: UC98282
O. Nordstedt #s.n. 23 August 1883
Spirogyra maxima (Hassall) Wittrock
Sweden, Bohuslän (Bh), Västra Götaland, Gothenburg; Thorslunda

Miami University - Algae
Catalog #: 000210923
O. Nordstedt #s.n. 23 August 1883
Spirogyra maxima (Hassall) Wittrock
Sweden, Öland (Öl), ad Thorslunda in Oelandia