1. Species Polysiphonia atlantica Kapraun & J.N.Norris, 1982
2. Species Polysiphonia breviarticulata (C.Agardh) Zanardini, 1840
3. Species Polysiphonia flocculosa (C.Agardh) Endlichter, 1843
4. Species Polysiphonia kampsaxii Børgesen, 1939
5. Species Polysiphonia opaca (C.Agardh) Moris & De Notaris, 1839
6. Species Polysiphonia scopulorum Harvey, 1855
7. Species Polysiphonia senticulosa Harvey, 1862
8. Species Polysiphonia sertularioides (Grateloup) J.Agardh, 1863
9. Species Polysiphonia setigera Kützing, 1849
10. Species Polysiphonia subtilissima Montagne, 1840
11. Species Polysiphonia subulata (Ducluzeau) Kützing, 1863
12. Species Polysiphonia brodiaei (Dillwyn) Sprengel, 1827 accepted as Polysiphonia brodiei (Dillwyn) Sprengel, 1827 accepted as Leptosiphonia brodiei (Dillwyn) A.M.Savoie & G.W.Saunders, 2019
13. Species Polysiphonia brodiei (Dillwyn) Sprengel, 1827 accepted as Leptosiphonia brodiei (Dillwyn) A.M.Savoie & G.W.Saunders, 2019
14. Species Polysiphonia denudata (Dillwyn) Greville ex Harvey, 1833 accepted as Carradoriella denudata (Dillwyn) Savoie & G.W.Saunders, 2019
15. Species Polysiphonia fucoides (Hudson) Greville, 1824 accepted as Vertebrata fucoides (Hudson) Kuntze, 1891 (synonym)
16. Species Polysiphonia furcellata (C.Agardh) Harvey, 1833 accepted as Vertebrata furcellata (C.Agardh) Kuntze, 1891 (synonym)
17. Species Polysiphonia harveyi Bailey, 1848 accepted as Melanothamnus harveyi (Bailey) Díaz-Tapia & Maggs, 2017
18. Species Polysiphonia japonica Harvey, 1857 accepted as Melanothamnus japonicus (Harvey) Díaz-Tapia & Maggs, 2017
19. Species Polysiphonia paniculata Montagne, 1842 accepted as Eutrichosiphonia paniculata (Montagne) D.E.Bustamante & T.O.Cho, 2021 (unaccepted > superseded combination)
20. Species Polysiphonia schneideri B.Stuercke & D.W.Freshwater, 2010 accepted as Kapraunia schneideri (Stuercke & Freshwater) Savoie & G.W.Saunders, 2019
21. 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. (2024). 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: Costello, M. J.; Ahyong, S.; Bieler, R.; Boudouresque, C.; Desiderato, A.; Downey, R.; Galil, B. S.; Gollasch, S.; Hutchings, P.; Kamburska, L.; Katsanevakis, S.; Kupriyanova, E.; Lejeusne, C.; Ma, K. C. K.; Marchini, A.; Occhipinti, A.; Pagad, S.; Panov, V. E.; Poore, G. C. B.; Rewicz, T.; Robinson, T. B.; Rius, M.; Sobczyk, R.; Stern, N.; Turon, X.; Valls Domedel, G.; Verleye, T.; Vieira, L. M.; Willan, R. C.; Yeo Chong Jinn, D.; Zhan, A. (2024) World Register of Introduced Marine Species (WRiMS) at: https://marinespecies.org/introduced./aphia.php?p=taxdetails&id=143853 on 2025-04-06

Costello, M. J.; Ahyong, S.; Bieler, R.; Boudouresque, C.; Desiderato, A.; Downey, R.; Galil, B. S.; Gollasch, S.; Hutchings, P.; Kamburska, L.; Katsanevakis, S.; Kupriyanova, E.; Lejeusne, C.; Ma, K. C. K.; Marchini, A.; Occhipinti, A.; Pagad, S.; Pino, L.; Poore, G. C. B.; Rewicz, T.; Rius, M.; Robinson, T. B.; Sobczyk, R.; Stępień, A.; Turon, X.; Valls Domedel, G.; Verleye, T.; Vieira, L. M.; Willan, R. C.; Zhan, A. (2025). World Register of Introduced Marine Species (WRiMS). Polysiphonia Greville, 1823. Accessed at: https://marinespecies.org/introduced/aphia.php?p=taxdetails&id=143853 on 2025-04-06

[taxonomic tree]