Distribution Long Island Sound to Scotian coast [details]
Guiry, M.D. & Guiry, G.M. (2021). AlgaeBase. World-wide electronic publication, National University of Ireland, Galway (taxonomic information republished from AlgaeBase with permission of M.D. Guiry). Spermothamnion repens (Dillwyn) Magnus, 1873. Accessed through: Kennedy, M.K., L. Van Guelpen, G. Pohle, L. Bajona (Eds.) (2021) Canadian Register of Marine Species at: http://marinespecies.org/carms/aphia.php?p=taxdetails&id=144702 on 2025-05-10
Nozères, C., Kennedy, M.K. (Eds.) (2025). Canadian Register of Marine Species. Spermothamnion repens (Dillwyn) Magnus, 1873. Accessed at: https://www.marinespecies.org/CaRMS/aphia.php?p=taxdetails&id=144702 on 2025-05-10
basis of recordGuiry, M.D. (2001). Macroalgae of Rhodophycota, Phaeophycota, Chlorophycota, and two genera of Xanthophycota, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 20-38 (look up in IMIS) [details]
basis of recordGuiry, M.D. & Guiry, G.M. (2025). AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. searched on YYYY-MM-DD., available online athttp://www.algaebase.org[details]
additional sourceGuiry, M.D. & Guiry, G.M. (2025). AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. searched on YYYY-MM-DD., available online athttp://www.algaebase.org[details]
additional sourceIntegrated Taxonomic Information System (ITIS). , available online athttp://www.itis.gov[details]
additional sourceSears, J.R. (ed.). 1998. NEAS keys to the benthic marine algae of the northeastern coast of North America from Long Island Sound to the Strait of Belle Isle. Northeast Algal Society. 163 p.[details]
additional sourceSouth, G. R.;Tittley, I. (1986). A checklist and distributional index of the benthic marine algae of the North Atlantic Ocean. untsman Marine Laboratory. St. Andrews, New Brunswick. 1-76.[details]
additional sourceMuller, Y. (2004). Faune et flore du littoral du Nord, du Pas-de-Calais et de la Belgique: inventaire. [Coastal fauna and flora of the Nord, Pas-de-Calais and Belgium: inventory]. Commission Régionale de Biologie Région Nord Pas-de-Calais: France. 307 pp., available online athttp://www.vliz.be/imisdocs/publications/145561.pdf[details]
additional sourceFredericq, S., T. O. Cho, S. A. Earle, C. F. Gurgel, D. M. Krayesky, L. E. Mateo-Cid, A. C. Mendoza-González, J. N. Norris, and A. M. Suárez. 2009. Seaweeds of the Gulf of Mexico, Pp. 187–259 in Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. I. Biodiversity, pp. 187-259. Texas A&M Univ. Press.[details]
Diet photosynthetic [details] Distribution Long Island Sound to Scotian coast [details] Habitat common epiphyte on Phyllophora pseudoceranoides and other coarse shallow sublittoral algae [details] Morphology Red colour results from the dominance of the pigments phycoerythrin and phycocyanin; this masks the other pigments, chlorophyll a (no chlorophyll b), beta-caratene and a number of unique xanthophylls. [details] Reproduction vegetative reproduction is rare; asexual reproduction is effected by the formation of various kinds of spores; Sexual reproduction is unique in this group due to their passive, non flagellated sperm cells (spermatia) [details]
Present 
