1. Species Polysiphonia crassa Okamura, 1902
2. Species Polysiphonia dachenensis S.-D.Xiang, 2007
3. Species Polysiphonia fragilis Suringar, 1867
4. Species Polysiphonia gracilis C.K.Tseng, 1944
5. Species Polysiphonia scopulorum Harvey, 1855
6. Species Polysiphonia senticulosa Harvey, 1862
7. Species Polysiphonia subtilissima Montagne, 1840
8. Species Polysiphonia villum J.Agardh, 1863
9. Species Polysiphonia confusa Hollenberg, 1961 accepted as Eutrichosiphonia confusa (Hollenberg) Savoie & G.W.Saunders, 2019
10. Species Polysiphonia elongata (Hudson) Sprengel, 1827 accepted as Carradoriella elongata (Hudson) Savoie & G.W.Saunders, 2019
11. Species Polysiphonia ferulacea Suhr ex J.Agardh, 1863 accepted as Melanothamnus ferulaceus (Suhr ex J.Agardh) Díaz-Tapia & Maggs, 2017 (synonym)
12. Species Polysiphonia fibrillosa (C.Agardh) Sprengel, 1827 accepted as Leptosiphonia fibrillosa (Agardh) Savoie & G.W.Saunders, 2019
13. Species Polysiphonia howei Hollenberg, 1945 accepted as Wilsonosiphonia howei (Hollenberg) D.Bustamante, Won & T.O.Cho, 2017
14. Species Polysiphonia porrecta T.Segi, 1951 accepted as Melanothamnus porrectus (T.Segi) Díaz-Tapia & Maggs, 2017 (synonym)
15. Species Polysiphonia richardsonii W.J.Hooker ex Harvey, 1833 accepted as Leptosiphonia fibrillosa (Agardh) Savoie & G.W.Saunders, 2019 (synonym)
16. Species Polysiphonia upolensis Grunow, 1874 accepted as Neosiphonia upolensis (Grunow) M.S.Kim & Boo, 2008 accepted as Melanothamnus upolensis (Grunow) Díaz-Tapia & Maggs, 2017 (synonym)
17. Species Polysiphonia morrowii Harvey, 1857 (uncertain)

marine, brackish, fresh

Hertwig, R. (1882). Die Actinien der Challenger Expedition. Gustav Fischer. Jena., pp. 119.
page(s): 55-56 [details] 

Guiry, M.D. & Guiry, G.M. (2025). AlgaeBase. World-wide electronic publication, National University of Ireland, Galway (taxonomic information republished from AlgaeBase with permission of M.D. Guiry). Polysiphonia Greville, 1823. Accessed through: Xu, K., An, J., Ding, L., Dong, D., Gao, Y., Huang, Y., Jiang, W., Lei, Y., Li, K., Li, X., Li, Y., Liang, X., Lin, G., Lin, M., Liu, H., Liu, J., Liu, W., Liu, X., Lu, D., Ma, Z., Ren, X., Sha, Z., Sun, J., Sun, S., Sun, Z., Tian, L., Wang, D., Wang, J., Wu, X., Xia, B., Xiao, N., Yin, J., Zhang, J., Zhang, S., Zhang, X., Zhao, E., Zheng, X., Zhou, H., Zhou, J. & Zhou, K. (2025) Chinese Register of Marine Species at: https://www.marinespecies.org/charms/aphia.php?p=taxdetails&id=143853 on 2025-06-09

Xu, K., An, J., Ding, L., Dong, D., Gao, Y., Huang, Y., Jiang, W., Lei, Y., Li, K., Li, X., Li, Y., Liang, X., Lin, G., Lin, M., Liu, H., Liu, J., Liu, W., Liu, X., Lu, D., Ma, Z., Ren, X., Sha, Z., Sun, J., Sun, S., Sun, Z., Tian, L., Wang, D., Wang, J., Wu, X., Xia, B., Xiao, N., Yin, J., Zhang, J., Zhang, S., Zhang, X., Zhao, E., Zheng, X., Zhou, H., Zhou, J. & Zhou, K. (2025). Chinese Register of Marine Species. Polysiphonia Greville, 1823. Accessed at: https://www.marinespecies.org/charms/aphia.php?p=taxdetails&id=143853 on 2025-06-09

[taxonomic tree]