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Colaconema caespitosum (J.Agardh) Jackelman, Stegenga & J.J.Bolton

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Biliphyta
Phylum Rhodophyta
Subphylum Eurhodophytina
Class Florideophyceae
Subclass Nemaliophycidae
Order Colaconematales
Family Colaconemataceae
Genus Colaconema

Pictures

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Colaconema caespitosum (J.Agardh) Jackelman, Stegenga & J.J.Bolton
Spanish Point, Co. Clare, Ireland; lower intertidal of exposed rocks on a limpet. 04 Aug 2004. Michael Guiry. © Michael Guiry (mike.guiry@nuigalway.ie).

Colaconema caespitosum (J.Agardh) Jackelman, Stegenga & J.J.Bolton
Spiddal, Co. Galway, Ireland; on Patella vulgata. 30 Sep 2007. Michael Guiry. © Michael Guiry (mike.guiry@nuigalway.ie).

 

Colaconema caespitosum (J.Agardh) Jackelman, Stegenga & J.J.Bolton Spanish Point, Co. Clare, Ireland; lower intertidal of exposed rocks on a limpet
© Michael Guiry (mike.guiry@nuigalway.ie)

Publication details
Colaconema caespitosum (J.Agardh) Jackelman, Stegenga & J.J.Bolton 1991: 303

Published in: Jackelmann, J.J., Stegenga, H.S. & Bolton, J.J. (1991). The marine benthic flora of the Cape Hangklip area and its phytogeographical affinities. South African Journal of Botany 57: 295-304, 4 figs, 1 table.

Type species
The type species (lectotype) of the genus Colaconema is Colaconema bonnemaisoniae Batters.

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

Basionym
Callithamnion caespitosum J.Agardh

Type information
Type locality: Brest (Athanasiadis 1996: 26). Lectotype: LD Agardh No. 18011 (Womersley 1994: 56).

Origin of species name
Adjective (Latin), growing in patches or tufts, caespitose (Stearn 1973).

Homotypic Synonym(s)
Callithamnion caespitosum J.Agardh 1851
Acrochaetium caespitosum (J.Agardh) Nägeli 1862
Chantransia caespitosa (J.Agardh) Batters 1896
Audouinella caespitosa (J.Agardh) P.S.Dixon 1976
Rhodothamniella caespitosa (J.Agardh) Feldmann 1981

Heterotypic Synonym(s)
Callithamnion botryocarpum Harvey 1855
Callithamnion codii P.Crouan & H.Crouan 1860
Acrochaetium botryocarpum (Harvey) J.Agardh 1892
Acrochaetium polyrhizum (Harvey) J.Agardh 1892
Chantransia botryocarpa (Harvey) De Toni 1897
Acrochaetium codii Hamel 1927
Chantransia codii (Hamel) Levring 1937
Rhodochorton codii (Hamel) Nakamura 1944
Audouinella botryocarpa (Harvey) Woelkerling 1971
Rhodothamniella codii (Hamel) Feldmann 1981
Colaconema botryocarpum (Harvey) Stegenga 1985
Audouinella codii (Hamel) G.Furnari 2000
Colaconema codii (Hamel) I.-K.Hwang & H.-S.Kim 2011

Nomenclatural notes
This combination was separately proposed by Bárbara & Cremades (1996: 386) on morphological grounds, and by Harper & Saunders (2002: 473), based on molecular and morphological data, and emended generic descriptions are provided by Harper & Saunders (2002) for Acrochaetium, Audouinella, Rhodochorton (Acrochaetiaceae) and Colaconema (Colaconematales ord. nov., Colanemataceae, fam. nov.).

General environment
This is a marine species.

Description
Forming dense, brownish-red tassel-like tufts of sparingly branched erect, uniseriate hair-like filaments. Cells oblong, 3-4 times as long as broad. Several plastids, each with a pyrenoid, against cell wall. Reproducing by monosporangia, all year around. Tetrasporangia occasionally formed in winter.

Habitat
On limpets (Patella spp.) on exposed shores and epiphytic on Codium fragile in the lower intertidal of exposed and semi-exposed coasts. Commoner on western and south-western coasts than records indicate.

Key characteristics
Association with limpets and Codium; tasellated growth form of tufts. Abundant and large monosporangia.

Similar species
Rhodochorton purpureum and Rhodothamniella floridula which are generally turf-forming and do not form monosporangia.

Detailed distribution with sources (Click to Load)

Source of current name
Jackelmann, J.J., Stegenga, H.S. & Bolton, J.J. (1991). The marine benthic flora of the Cape Hangklip area and its phytogeographical affinities. South African Journal of Botany 57: 295-304, 4 figs, 1 table.

Key references
Bárbara, I. & Cremades, J. (1996). Seaweeds of the Ría de A Coruña (NW Iberian Peninsula, Spain). Botanica Marina 39: 371-388.

Harper, J.T. & Saunders, G.W. (2002). A re-classification of the Acrochaetiales based on molecular and morphological data, and establishment of the Colaconematales, ord. nov.. British Phycological Journal 37: 463-475.

Created: 30 December 1998 by M.D. Guiry

Verified by: 01 February 2017 by M.D. Guiry

Accesses: This record has been accessed by users 2157 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.)

Garbary, D.J. & Pei, Z. (2006). Mitochondrial dynamics in red algae. 3. Filament apices in Colaconema caespitosum (Acrochaetiales) and Antithamnion cruciatum (Ceramiales). Algae 21: 323-332.
Garbary, D.J. & Zuchang, P. (2006). Mitochondrial dynamics in red algae. 3. Filament apices in Colaconema caespitosum (Acrochaetiales) and Antithamnion cruciatum (Ceramiales). Algae 21(3): 323-332, 18 figs, 6 tables.

Linking to this page: http://www.algaebase.org/search/species/detail/?species_id=14661

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 13 November 2018.

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