Migula, Sydow & Wahlstedt, Characeae Exs.
Migula, E.F.A.W.; Sydow, P.; Wahlstedt, L.J. [1 - 150]

University Herbarium, University of California, Berkeley
Catalog #: UC1158875
P. Sydow #34129 17 July 1899
Chara aspera C.L.Willdenow
Germany, Rugia, "Zicker-See"