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Polysiphonia stricta (Mertens ex Dillwyn) Greville

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

Pictures

click on thumbnail for larger version.

Polysiphonia stricta (Mertens ex Dillwyn) Greville
Spain, Galicia, Ría de A Coruña, 2009, cystocarps. Ignacio Bárbara. © Ignacio Bárbara (barbara@udc.es).

Polysiphonia stricta (Mertens ex Dillwyn) Greville
Spain, Galicia, Ría de A Coruña, 2009, cystocarps. Ignacio Bárbara. © Ignacio Bárbara (barbara@udc.es).

Polysiphonia stricta (Mertens ex Dillwyn) Greville
Spain, Galicia, Ría de A Coruña, 2009, tetrasporangia. Ignacio Bárbara. © Ignacio Bárbara (barbara@udc.es).

Polysiphonia stricta (Mertens ex Dillwyn) Greville
Spain, Galicia, Ría de A Coruña, 2009, cystocarps. Ignacio Bárbara. © Ignacio Bárbara (barbara@udc.es).

Polysiphonia stricta (Mertens ex Dillwyn) Greville
Black Head, Co. Clare, Ireland; mature tetrasporangia. 28 Apr 2006. Michael Guiry. © Michael Guiry (mike.guiry@nuigalway.ie).

Polysiphonia stricta (Mertens ex Dillwyn) Greville
Black Head, Co. Clare, Ireland; lower shore. 28 Apr 2006. Michael Guiry. © Michael Guiry (mike.guiry@nuigalway.ie).

Polysiphonia stricta (Mertens ex Dillwyn) Greville
New Quay, Co. Clare, Ireland; spring plants in MLWN pools. 29 Mar 2002. Michael Guiry. © Michael Guiry (mike.guiry@nuigalway.ie).

 

Polysiphonia stricta (Mertens ex Dillwyn) Greville New Quay, Co. Clare, Ireland; spring plants in MLWN pools
© Michael Guiry (mike.guiry@nuigalway.ie)

Publication details
Polysiphonia stricta (Mertens ex Dillwyn) Greville 1824: 309

Published in: Greville, R.K. (1824). Flora edinensis: or a description of plants growing near Edinburgh, arranged according to the Linnean system, with a concise introduction to the natural orders of the class Cryptogamia, and illustrated plates. pp. i-lxxxi, 1-478. Edinburgh: Printed for William Blackwood, Edinburgh; and T. Cadell, Strand, London.
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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 of an entity that is currently accepted taxonomically.

Basionym
Conferva stricta Mertens ex Dillwyn

Type information
Lectotype locality: Glamorgan (Swansea) (Maggs & Hommersand 1993: 355). Lectotype: Dillwyn; undated; BM-K (Maggs & Hommersand 1993: 355). Notes: Syntype localities: Dover and Yarmouth, England; Swansea, Wales (INA). Dillwyn (1804), pl. 40.

Origin of species name
Adjective (Latin), drawn close together, very upright, very straight (Stearn 1973).

Homotypic Synonym(s)
Conferva stricta Mertens ex Dillwyn 1804
Ceramium strictum (Mertens ex Dillwyn) Poiret 1811
Hutchinsia stricta (Mertens ex Dillwyn) C.Agardh 1817

Heterotypic Synonym(s)
Conferva urceolata Lightfoot ex Dillwyn 1809
Conferva patens Dillwyn 1809
Hutchinsia urceolata (Lightfoot ex Dillwyn) Lyngbye 1819
Polysiphonia urceolata (Lightfoot ex Dillwyn) Greville 1824
Hutchinsia comosa C.Agardh 1824
Hutchinsia roseola C.Agardh 1828
Polysiphonia formosa Suhr 1831
Polysiphonia patens (Dillwyn) Harvey 1833
Polysiphonia roseola (C.Agardh) Fries 1835
Polysiphonia pulvinata Liebmann 1845
Polysiphonia urceolata f. roseola (C.Agardh) J.Agardh 1863
Polysiphonia urceolata f. comosa (C.Agardh) J.Agardh 1863
Polysiphonia urceolata f. formosa (Suhr) J.Agardh 1863
Hutchinsia abyssina Lyngbye 1880
Polysiphonia urceolata f. typica Kjellman 1883
Polysiphonia urceolata f. pulvinata Kylin 1907
Polysiphonia spiralis L.Batten 1923

Taxonomic notes
John et al. (2004) cite Polysiphonia lepadicola (Lyngb.) Kütz as a synonym of this species.

Habitat notes
mid to low intertidal of sand-covered rocks from moderately to extremely wave-exposed sites (Diaz-Tapia & Bárbara 2013) - (27 Jan 2014) - Wendy Guiry

General environment
This is a marine species.

Common names

(as Polysiphonia stricta (Mertens ex Dillwyn) Greville)
English: Pitcher Siphon Weed (Bunker et al. 2010).

Swedish: Rosenslick, Rödris (Tolstoy & Österlund 2003).

Description
Soft, slender cylindrical, usually densely tufted, deep red fronds, to 200 mm long, from creeping rhizoidal base. Branching pseudodichotomous to distally alternate. Minute central siphon with 4 pericentral siphons, ecorticate. Articulations 3-5 times as long as broad in main branches, rather shorter than broad in ramuli.

Habitat
On rocks, shells and epiphytic (especially on Laminaria hyperborea stipes), intertidal at all levels and subtidal, generally distributed, abundant, particularly on wave-exposed shores.

Detailed distribution with sources (Click to Load)

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

Díaz-Tapia, P. & Bárbara, I. (2013). Seaweeds from sand-covered rocks of the Atlantic Iberian Peninsula. Part. 1. The Rhodomelaceae (Ceramiales, Rhodophyta). Cryptogamie Algologie 34(4): 325-422.

Kim, M.-S., Maggs, C.A., McIvor, L. & Guiry, M.D. (2000). Reappraisal of the type species of Polysiphonia (Rhodomelaceae, Rhodophyta). European Journal of Phycology 35: 83-92.

Loiseaux-de Goër, S. & Noailles, M.-C. (2008). Algues de Roscoff. pp. [1]-215, col. figs. Roscoff: Editions de la Station Biologique de Roscoff.

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.

Pedersen, P.M. (2011). Grønlands havalger. pp. [1] 7-208. Copenhagen: Forlaget Epsilon.DK.

Wynne, M.J. (1998). A checklist of benthic marine algae of the tropical and subtropical western Atlantic: first revision. Nova Hedwigia Beihefte 116: iii, 1-155, 5 figs..

Created: 31 March 1996 by M.D. Guiry

Verified by: 25 October 2017 by M.D. Guiry

Accesses: This record has been accessed by users 8488 times since it was created.

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Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 20 November 2018.

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