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 #: UC761177
K. E. Hirn #s.n. 25 July 1894
Spirogyra insignis (Hassall) Kützing
Finland, Ålands landsbygd, Finström, Fenniae ad Godby Alandiæ in stagno