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

Miami University - Algae
Catalog #: 000198284
s.n.
Conferva loefgrenii variety suecica

Field Museum of Natural History
Catalog #: C0172662F
V. Wittrock #s.n. 18 August 1882
Conferva loefgrenii Nordstedt
Sweden, Blekinge (Bl), Trofta near Hoby