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Description: |
Soft, gelatinous, cylindrical, pinkish to brown-red fronds (often bleached yellow or almost white in sunny habitats), to 300 mm high, filled with a watery mucilage. Main axis simple, jointed, with nodal diaphragms, very slightly constricted at nodes, 2-several branches per node, themselves often branched, with small beaded ultimate ramuli. Very variable in branching pattern, plants of exposed coasts often simple with small terminal tufts of ramuli. |
| Name History |
Adjective (Latin), verticillate, whorled |
| Biogeography |
NE Atlantic (Norway to Sierra Leone); Mediterranean. |
| References |
Braune, W. (2008). Meeresalgen. Ein Farbbildführer zu den verbreiteten benthischen Grün- Braun- und Rotalgen der Weltmeere. pp. [1]-596, 266 pls. Ruggell: A.R.G. Gantner Verlag. Irvine, L.M. & Guiry, M.D. (1983). Rhodymeniales. In: Seaweeds of the British Isles. Volume 1. Rhodophyta. Part 2A. Cryptonemiales (sensu stricto), Palmariales, Rhodymeniales. (Irvine, L.M. Eds), pp. 77-98. London: British Museum (Natural History). Loiseaux-de Goër, S. & Noailles, M.-C. (2008). Algues de Roscoff. pp. [1]-215, col. figs. Roscoff: Editions de la Station Biologique de Roscoff. Withall, R.D. & Saunders, G.W. (2007 '2006'). Combining small and large subunit ribosomal DNA genes to resolve relationships among orders of the Rhodymeniophycidae (Rhodophyta): recognition of the Acrosymphytales ord. nov. and Sebdeniales ord. nov. European Journal of Phycology 41: 379-394. |
| Habitat: |
On rocks and stones and epiphytic, lower intertidal and subtidal, generally distributed, common. |
| Type information: |
Basionym: Fucus verticillatus Lightfoot Type locality: Jura, Argyll, Scotland (Irvine & Guiry 1983: 81). Lectotype: BM-K (Irvine & Guiry 1983: 81). |
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