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Callithamnion tetragonum (Withering) S.F.Gray

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Biliphyta
Phylum Rhodophyta
Subphylum Eurhodophytina
Class Florideophyceae
Subclass Rhodymeniophycidae
Order Ceramiales
Family Callithamniaceae
Subfamily Callithamnioideae
Tribe Callithamnieae
Genus Callithamnion

Pictures

click on thumbnail for larger version.

Callithamnion tetragonum (Withering) S.F.Gray
microscope, Spain, Galicia, A Coruña, Veigue, 2001. Ignacio Bárbara. © Ignacio Bárbara (barbara@udc.es).

Callithamnion tetragonum (Withering) S.F.Gray
microscope, Spain, Galicia, A Coruña harbour. Ignacio Bárbara. © Ignacio Bárbara (barbara@udc.es).

Callithamnion tetragonum (Withering) S.F.Gray
microscope, Spain, Galicia, Ría de Betanzos, 2006. Ignacio Bárbara. © Ignacio Bárbara (barbara@udc.es).

Callithamnion tetragonum (Withering) S.F.Gray
microscope, Spain, Galicia, A Coruña harbour; cystocarps. Ignacio Bárbara. © Ignacio Bárbara (barbara@udc.es).

Callithamnion tetragonum (Withering) S.F.Gray
Carreroe, Co. Galway, Ireland; drift. 14 Apr 2009. Michael Guiry. © Michael Guiry (mike.guiry@nuigalway.ie).

Callithamnion tetragonum (Withering) S.F.Gray
Finavarra, Co. Clare, Ireland. 08 Aug 2004. Michael Guiry. © Michael Guiry (mike.guiry@nuigalway.ie).

Callithamnion tetragonum (Withering) S.F.Gray
Spain, Galicia, A Coruña, Ártabra, 2005, intertidal; growing epiphytically on Bifurcaria bifurcata. Ignacio Bárbara. © Ignacio Bárbara (barbara@udc.es).

Callithamnion tetragonum (Withering) S.F.Gray
Carreroe, Co. Galway, Ireland; chloroplasts and nuclei in axial cell. 14 Apr 2009. Michael Guiry. © Michael Guiry (mike.guiry@nuigalway.ie).

Callithamnion tetragonum (Withering) S.F.Gray
Carreroe, Co. Galway, Ireland; composite picture. 13 Apr 2009. Michael Guiry. © Michael Guiry (mike.guiry@nuigalway.ie).

 

Callithamnion tetragonum (Withering) S.F.Gray Finavarra, Co. Clare, Ireland
© Michael Guiry (mike.guiry@nuigalway.ie)

Publication details
Callithamnion tetragonum (Withering) S.F.Gray 1821: 329

Published in: Gray, S.F. (1821). A natural arrangement of British plants, according to their relations to each other, as pointed out by Jussieu, De Candolle, Brown, &c. including those cultivated for use; with an introduction to botany, in which the terms newly introduced are explained; illustrated by figures. pp. vol. 1: [i]-xxviii, [1]- 824, pls I-XXI plates. London: Printed for Baldwin, Cradock & Joy, Paternoster-Row.
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Publication date: 1 Nov. 1821

Type species
The type species (lectotype) of the genus Callithamnion is Callithamnion corymbosum (Smith) Lyngbye.

Status of name
This name is of an entity that is currently accepted taxonomically.

Basionym
Conferva tetragona Withering

Type information
Type locality: Bill of Portland, Dorset, England (Dixon & Price 1981: 138). Lectotype: Velley & Stackhouse; undated; GL (Maggs & Hommersand 1993: 129).

Origin of species name
Adjective (Latin), four-angled (Stearn 1973).

Homotypic Synonym(s)
Conferva tetragona Withering 1796
Ceramium tetragonum (Withering) C.Agardh 1817

Heterotypic Synonym(s)
Callithamnion tetragonum var. brachiatum (Bonnemaison) J.Agardh
Ceramium fruticulosum Roth 1800
Conferva fruticuosa Wiulfen 1803
Ceramium brachiatum Bonnemaison 1822
Ceramium guttatum Bonnemaison 1828
Callithamnion affine Harvey 1833
Callithamnion fruticulosum J.Agardh 1841
Callithamnion brachiatum (Bonnemaison) Harvey 1847
Callithamnion baileyi Harvey 1853
Callithamnion baileyi var. boreale Harvey 1853
Callithamnion baileyi var. rochei Harvey 1853
Callithamnion baileyi var. squarrosa Harvey 1853
Callithamnion baileyi var. laxa Farlow 1881
Callithamnion tetragonum f. brachiatum (Bonnemaison) Gran 1897
Callithamnion spiniferum Kylin 1907
Callithamnion tetragonum var. fruticulosum (J.Agardh) Rosenvinge 1924

General environment
This is a marine species.

Description
Brownish-red fronds, to 50 mm long. Unseriate filaments, coticated below, repeatedly branched with simple, alternate branches, ultimate branchlets densely clothed with tufts of alternate ramuli, corymbose, incurved, attenuate at base and apex. Articulations of main axes 2-4 times as long as broad, of ramuli 1.5 times as long as broad.

Habitat
Epiphytic, lower intertidal and subtidal, widely distributed, frequent.

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.

Braune, W. (2008). Meeresalgen. Ein Farbbildführer zu den verbreiteten benthischen Grün- Braun- und Rotalgen der Weltmeere. pp. [1]-596, pls 1-266 (colour photographs). Ruggell: A.R.G. Gantner Verlag.

Dixon, P.S. & Price, J.H. (1981). The genus Callithamnion (Rhodophyta: Ceramiaceae) in the British Isles. Bulletin of the Britsh Museum (Natural History), Botany 9: 99-141.

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.

Rodríguez-Prieto, C., Ballesteros, E., Boisset, F. & Afonso-Carrillo, J. (2013). Guía de las macroalgas y fanerógamas marinas del Mediterráneo occidental. pp. [1]-656. Barcelona: Ediciones Omega, S.A..

Schories, D., Selig, U. & Schubert, H. (2009). Species and synonym list of the German marine macroalgae based on historical and recent records. Rostocker Meeresbiologische Beiträge 21: 7-135.

Created: 31 March 1996 by M.D. Guiry

Verified by: 16 April 2018 by M.D. Guiry

Accesses: This record has been accessed by users 6442 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.

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

Rueness, J. & Rueness, M. (1985). Regular and irregular sequences in the life history of Callithamnion tetragonum (Rhodophyta, Ceramiales). British Phycological Journal 20: 329-333.

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Citing AlgaeBase
Cite this record as:
M.D. 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 14 October 2019.

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