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

Field Museum of Natural History
Catalog #: C0532237F
V. Wittrock #s.n. 17 July 1876
Sphaeroplea annulina (Roth) C.Agardh
Sweden, Uppland (Upl), Uppsala, ad Flottsund prope Upsaliam

Field Museum of Natural History
Catalog #: C0532234F
V. Wittrock #s.n. 17 July 1876
Sphaeroplea annulina (Roth) C.Agardh
Sweden, Uppland (Upl), Uppsala, ad Flottsund prope Upsaliam

Miami University - Algae
Catalog #: 000197709
Veit Wittrock #s.n. 17 July 1876
Sphaeroplea annulina (Roth) C.Agardh
Sweden, Uppland (Upl), Flottsund prope Upsaliam