Polysiphonia violacea (Roth) Sprengel
(Please note: only references with the binomials in the title are included. The information is from the Literature database.)
Koch, C. (1986). Attempted hybridization between Polysiphonia fibrillosa and P. violacea (Bangiophyceae) from Denmark; with culture studies primarily on P. fibrillosa. Nordic Journal of Botany 6: 123-128.
Yamanouchi, S. (1906). The life history of Polysiphonia violacea. Botanical Gazette 41: 425-433.