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

University Herbarium, University of California, Berkeley
Catalog #: UC759521
O. Borge #s.n. 24 August 1889
Arthrodesmus incus Hassal ex Ralfs
Sweden, Stockholms län, Sueciae in scrobienlis ad Sandviken paroeciae Väddö in Uplandia.

University Herbarium, University of California, Berkeley
Catalog #: UC97296
O. Fr. Andersson Borge #s.n. 24 August 1889
Arthrodesmus incus Hassal ex Ralfs
Sweden, Stockholms län, Sueciae in scrobienlis ad Sandviken paroeciae Väddö in Uplandia.