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Polysiphonia elongata (Hudson) Sprengel

Empire Eukaryota
Kingdom Plantae
Subkingdom Biliphyta
Phylum Rhodophyta
Subphylum Eurhodophytina
Class Florideophyceae
Subclass Rhodymeniophycidae
Order Ceramiales
Family Rhodomelaceae
Tribe Polysiphonieae
Genus Polysiphonia


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Aphanothece elabens (Brébisson ex Meneghini) Elenkin

Polysiphonia elongata (Hudson) Sprengel Ría de Vigo, Galicia, Spain, 2016
© Ignacio Bárbara (barbara@udc.es)

Publication details
Polysiphonia elongata (Hudson) Sprengel 1827: 349

Published in: Sprengel, K.[P.J.] (1827). Systema vegetabilium Editio decima sexta. Voluminis IV. Pars I. Classis 24. Vol. 4 pp. [i]-iv, [1]-592. Gottingae [Göttingen]: sumtibus Librariae Dieterichianae.
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Type species
The type species (holotype) of the genus Polysiphonia is Polysiphonia urceolata (Lightfoot ex Dillwyn) Greville.

Status of name
This name is currently regarded as a synonym of Carradoriella elongata (Hudson) A.M.Savoie & G.W.Saunders

Conferva elongata Hudson

Type information
Type locality: "Habitat in littoribus marinis frequens." [England] (Hudson 1762: 484). Lectotype: BM-K (Maggs & Hommersand 1993: 327).

Origin of species name
Adjective (Latin), elongated (Stearn 1973).

Heterotypic Synonym(s)
Polysiphonia elongata var. rosea (Greville) J.Agardh
Polysiphonia elongata var. arborescens (Kützing) Schiffner
Polysiphonia elongata var. robusta (Kützing) Schiffner
Polysiphonia elongata var. ruchingeri (C.Agardh) Schiffner
Polysiphonia elongata var. stenocarpa (Kützing) Schiffner
Hutchinsia elongata var. prolifera C.Agardh 1817
Hutchinsia elongata var. denudata C.Agardh 1828
Polysiphonia elongata var. denudata Harvey 1833
Polysiphonia elongata var. sanguinolenta (C.Agardh) Harvey 1833
Polysiphonia elongata var. denudata (C.Agardh) Zanardini 1841
Ceramium elongatum var. denudatum (C.Agardh) Oersted 1844
Ceramium elongatum var. proliferum (C.Agardh) Oersted 1844
Polysiphonia elongata f. lyngbyei (C.Agardh) J.Agardh 1863
Polysiphonia elongata f. microdendron (J.Agardh) Kjellman 1880
Polysiphonia elongata f. denudata (C.Agardh) Batters 1890
Polysiphonia elongata var. microdendron (J.Agardh) Gran 1897
Polysiphonia elongata f. nana Gran 1897
Polysiphonia elongata f. glomerata Gran 1897
Polysiphonia elongata f. gelatinosa Kylin 1907
Polysiphonia elongata f. schuebeleri (Foslie) Rosenvinge 1924
Polysiphonia elongata f. gelatinosa (Kylin) Kylin 1944

Distributional notes
Western Mediterranean, temperate waters of Europe from Portugal to Norway, and the Atlantic coast of North America from New England to Prince Edward Is. (Kapraun & Rueness, 1983). - (6 Mar 2019) - Wendy Guiry

General environment
This is a marine species.

Common names

(as Polysiphonia elongata (Hudson) Sprengel)
English: Lobster Horns (Dickinson 1963), Elongate Siphon Weed (Bunker et al. 2010).

Swedish: Grovslick (Tolstoy & Österlund 2003).

Cartilaginous, cylindrical, dark reddish brown fronds, to 300 mm long, with crimson ramuli, from discoid base. Branches alternate to pseudodichotomous, densely clothed in spring with gelatinous, ephemeral ramuli, tapered at base and apex. Small cental siphon with 4 large primary pericentral siphons, 4 alternating secondary pericentral siphons, and in older parts 8 tertiary pericentral siphons and a zone of corticating cells. Articulations barely visible in corticated parts, rather broader than long near base, to longer than broad in ramuli.

On stones and shells, open sandy and gravelly substrates, intertidal to deepish subtidal, widely distributed, common, sometimes washed ashore in quantity.

Detailed distribution with sources (Click to Load)

Source of current name
Savoie, A.M. & Saunders, G.W. (2018 '2019'). A molecular assessment of species diversity and generic boundaries in the red algal tribes Polysiphonieae and Streblocladieae (Rhodomelaceae, Rhodophyta) in Canada. European Journal of Phycology 54(1): 1-25.

Key references
Athanasiadis, A. (2016). Phycologia Europaea Rhodophyta Vol. II. pp. [2], 763-1504. Thessaloniki: Published and distributed by the author.

Kapraun, D.F. & Rueness, J. (1983). The genus Polysiphonia (Ceramiales, Rhodomelaceae) in Scandinavia. Giornale Botanico Italiano 117: 1-30.

Larsen, A. & Sand-Jensen, K. (2005). Salt tolerance and distribution of estuarine benthic macroalgae in the Kattegat-Baltic Sea area. Phycologia 45: 13-23.

Maggs, C.A. & Hommersand, M.H. (1993). Seaweeds of the British Isles. Volume 1. Rhodophyta. Part 3A. Ceramiales. pp. [i]-xv, 1-444, 129 figs, map. London: HMSO.

Mathieson, A.C. & Dawes, C.J. (2017). Seaweeds of the Northwest Atlantic. pp. [i]-x, 1-798, CIX pls. Amherst & Boston: University of Massachusetts Press.

Serio, D., Alongi, G., Catra, M., Cormaci, M. & Furnari, G. (2006). Changes in the benthic algal flora of Linosa Island (Straits of Sicily, Mediterranean Sea). Botanica Marina 49: 135-144.

Created: 31 March 1996 by M.D. Guiry

Verified by: 06 March 2019 by Wendy Guiry

Accesses: This record has been accessed by users 16810 times since it was created.

Verification of data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

(Please note: only references with the binomials in the title are included. The information is from the Literature database.)

Lichtlé, C. (1975). Étude ultrastructurale de la paroi du Polysiphonia elongata (Harv.) Rhodophycée, Floriodée, a l'aide d'actions ménagées d'enzymes. J. Micros. Biol. Cell. 23: 93-104.
Pedersén, M., Roomans, G.M. & Hofsten, A.V. (1980). Cell inclusions containing bromine in Rhodomela confervoides (Huds.) Lamour. and Polysiphonia elongata Harv. (Rhodophyta; Ceramiales). Phycologia 19: 153-158, 6 figs.

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Citing AlgaeBase
Cite this record as:
Wendy Guiry in Guiry, M.D. & Guiry, G.M. 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 21 March 2019.

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