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Authority: |
(Withering) Molinari & Guiry |
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Description: |
Thallus to 1 m long, usually solitary, attached by a irregular conical disc. Axis cylindrical, usually branched, with smooth, rounded apex immersed between bases or tophules of developing laterals. Lateral branch systems (below) radial or distichous, with greenish-blue iridescence when first formed, about 50 cm long, repeatedly branched in a pinnate manner, either regularly or irregularly, with infrequent cryptostomata and bearing spine-like appendages; deciduous in summer; first-formed laterals of the season with tophules, later without. Tophules ovoid, to 15 mm long, smooth or covered with small tubercles, persistent on axis after rest of lateral has been shed. Receptacles formed in the ultimate branchlets, simple or branched, nodose, usually bearing spine-like appendages. Air vesicles inconspicuous, dilations of ultimate branchlets, solitary, in series or confluent; sometimes absent. Link for Seaweed Site |
| Biogeography |
Southern and western shores of Britain and Ireland, north to the Argyll in Scotland; Atlantic France and Spain, Portugal, Canary Is., Morocco, south to Mauritania. |
| References |
Roberts, M. (1977). Studies on marine algae of the British Isles. 9. Cystoseira nodicaulis (Withering) M.Roberts. British Phycological Journal 12: 175-199. Penot, M., Dumay, J. & Pellegrini, M. (1985). Contribution a l'étude de la fixation et du transport du 14C chez Cystoseira nodicaulis (Fucales, Cystoseiraceae). Phycologia 24: 93-102, 6 figs, 2 tables.
Rico, J.M. & Fernández, C. (1997). Ecology of Sargassum muticum on the North Coast of Spain II. Physiological differences between Sargassum muticum and Cystoseira nodicaulis. Botanica Marina 40: 405-410. Arenas, F., Fernández, C., Rico, J.M., Fernández, E. & Haya, D. (1995). Growth and reproductive strategies of Sargassum muticum (Yendo) Fensholt and Cystoseira nodicaulis (Whit.) Roberts. Sci. Mar. 59 (supl.): 1-8. Gómez Garreta, A., Barcelo i Martí, M.C., Ribera Siguán, M.A. & Rull Lluch, J. (2001). Cystoseira C. Agardh. In: Flora Phycologica Iberica Vol. 1 Fucales. (Gómez Garreta, A. Eds) Vol.1, pp. 99-166. Murcia: Universidad de Murcia. |
| Habitat: |
Found in large intertidal rock pools and lagoons, often with Ericaria selaginoides and Gongolaria baccata |
| Common names: |
In English: Bushy Noduled Wrack (Bunker et al. 2010). |
| Type information: |
Basiony: Fucus nodicaulis: “On the coast of Cornwall; at Penzance and Acton Castle (Withering 1796: 111). |
