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Callithamnion tetricum (Dillwyn) S.F.Gray

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


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Callithamnion tetricum (Dillwyn) S.F.Gray
Finavarra, Co. Clare, ireland; plants to 70 mm long. 25 May 2011. M.D. Guiry. © M.D. Guiry (mike.guiry@nuigalway.ie).


Enteromorpha grevillei Thuret

Callithamnion tetricum (Dillwyn) S.F.Gray Finavarra, Co. Clare, ireland; plants to 70 mm long
© M.D. Guiry (mike.guiry@nuigalway.ie)

Publication details
Callithamnion tetricum (Dillwyn) S.F.Gray 1821: 324

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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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.

Conferva tetrica Dillwyn

Type information
Type locality: Common about the Mumbles and in other parts of the Peninsula of Gower (Dillwyn 1806: pl. 81). Lectotype: P. Thompson A4502; WELT Herb. Silvanus P.Thompson A 4502 (Dixon & Price 1981: 138). Notes: Dixon & Price (1977: 138): "Type locality: 'Common about the Mumbles and in other parts of the Peninsula of Gower' (Dillwyn, 1806, pi. 81). Lectotype: WELT, Herb. Silvanus P. Thompson A 4502, Dillwyn, Swansea, 1806."

Origin of species name
Adjective (Latin), harsh (Newton 1931).

Homotypic Synonym(s)
Dasythamnion tetricum (Dillwyn) Nägeli
Conferva tetrica Dillwyn 1806

Heterotypic Synonym(s)
Ceramium congestum Bonnemaison 1828

General environment
This is a marine species.

Shaggy, rigid, dark brownish red tufts, to 200 mm long, from large discoid base. Main axes and branches corticated, often with weft of adventitious laterals. Branches irregularly alternate, those of final order clothed in alternately pinnate ramuli, which are somewhat attenuate at base and apex, with cells 1-1.5 times as long as broad.

On shady rocks in under fucoid canopies, lower intertidal and subtidal, southern and western coasts, common.

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.

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.

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.

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 2309 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.)

Westbrook, M.A. (1930). Callithamnion tetricum (Dillw.) Ag.. Journal of Botany, British and Foreign 68: 193-203.

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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 24 May 2019.

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