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

Miami University - Algae
Catalog #: 000211352
s.n.
Penium oblongum De Bary

University Herbarium, University of California, Berkeley
Catalog #: UC759287
G. Lagerheim #s.n. 00 June 1888
Penium oblongum De Bary
Germany, Baden-Württemberg, Freiburg, Hinterzarten [Erlenbruck]