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Gelidium
pusillum (Stackhouse) Le Jolis

Gelidium pusillum
(Stackhouse) Le Jolis
(detailed information)


Species Details
Class:	Florideophyceae
Genus:	Gelidium J.V. Lamouroux
Species:	Gelidium pusillum
Authority:	(Stackhouse) Le Jolis
Description:	Cartilaginous, purplish or blackish red, turf-forming, 2-10 mm high, arising from an extensive creeping base and incorporating shell debris and small molluscs. Erect fronds flattened and leaf-like and 0.5-2 mm broad. Similar species: Catenella caespitosa also forms turf- or mat-like extensions but is softer has has the appearance of small cocktail sausages. Original publication: Le Jolis, A. (1863). Liste des algues marines de Cherbourg. Mémoires de la Société Impériale des Sciences Naturelles de Cherbourg 10: 5-168, pls I-IV. Download PDF from Algaebase

Name History	Adjective (Latin), very small
Biogeography	NE and E Atlantic (from Norway to Benin); Mediterranean; EW Atlantic ; Caribbean; SE Atlantic; SW Atlantic; Idian Ocean; SW Pacific. In Portugal: New record for Beira Litoral, collected in Buarcos in 2003. Includes Gelidium pusillum var. pulvinatum (C. Agardh) J. Feldmann (PDF link).
Uses and compounds	Source of hydrocolloids - source of agar
References	Dawes, C.J. & Mathieson, A.C. (2008). The seaweeds of Florida. pp. [i]- viii, [1]-591, [592], pls I-LI. Gainesville, Florida: University Press of Florida. Dixon, P.S. & Irvine, L.M. (1977). Seaweeds of the British Isles. Volume 1. Rhodophyta. Part 1. Introduction, Nemaliales, Gigartinales. pp. xi + 252, 90 figs. London: British Museum (Natural History). Lee, H.-B. & Kim, J.-I. (1995). Notes on gelidiales species from Korea. In: Taxonomy of Economic Seaweeds. (Abbott, I.A. Eds) Vol.5, pp. 161-174. La Jolla, California: California Sea Grant College System. Lee, H.B. (1994). Some species of Gelidium (Gelidiales, Rhodophyta) from Korea. In: Taxonomy of Economic Seaweeds. (Abbott, I. Eds) Vol.4, pp. 67-79. Lipkin, Y. & Silva, P.C. (2002). Marine algae and seagrasses of the Dahlak Archipelago, southern Red Sea. Nova Hedwigia 75: 1-90, 7 figs. Loiseaux-de Goër, S. & Noailles, M.-C. (2008). Algues de Roscoff. pp. [1]-215, col. figs. Roscoff: Editions de la Station Biologique de Roscoff. Okamura, K. (1909). Icones of Japanese algae. Vol. II pp. 1-20, pls LI-LV. Tokyo: The Author. Rodríguez, D. & Santelices, B. (1988). Separation of Gelidium and Pterocladia on vegetative characters. In: Taxonomy of Economic Seaweeds With reference to some Pacific and Caribbean Species Vol. II. (Abbott, I.A. Eds), pp. 115-125. La Jolla: Sea Grant College Program, University of California. Santelices, B. & Stewart, J.G. (1985). Pacific species of Gelidium Lamouroux and other Gelidiales (Rhodophyta), with keys and descriptions to the common or economically important species. In: Taxonomy of Economic Seaweds With Refernce to some Paicific and Caribbean Species. (Abbott, I.A. & Norris, J.N. Eds), pp. 17-31. La Jolla: California Sea Grant College Program. Santelices, B. (1988). Taxonomic studies on Chinese Gelidiales (Rhodophyta). In: Taxonomy of Economic Seaweeds. (Abbott, I.A. Eds) Vol.2, pp. 91-107. Silva, P.C., Basson, P.W. & Moe, R.L. (1996). Catalogue of the benthic marine algae of the Indian Ocean. University of California Publications in Botany 79: 1-1259. Smith, G.M. (1944). Marine algae of the Monterey Peninsula. pp. i-ix, 1-622, 98 pls. Stanford: Stanford University Press. Womersley, H.B.S. & Guiry, M.D. (1994). Order Gelidiales Kylin 1923: 132. In: The marine benthic flora of southern Australia. Part IIIA. Bangiophyceae and Florideophyceae (Acrochaetiales, Nemaliales, Gelidiales, Hildenbrandiales and Gigartinales sensu lato). (Womersley, H.B.S. Eds), pp. 118-142. Canberra: Australian Biological Resources Study. Xia, B.M. (2004). Flora algarum marinarum sinicarum Tomus II Rhodophyta No. III Gelidiales Cryptonemiales Hildenbrandiales. pp. [i]-xxi, 1-203, pls I-XIII. Beijing: Science Press. Xia, B.M., Tseng, C.K. & Wang, Y.Q. (2002). Synopsis of the Chinese species of Gelidium (Gelidiales, Rhodophyta). In: Taxonomy of Economic Seaweeds with reference to some Pacific species. Vol. VIII. (Abbott, I.A. & Mcdermid, K.J. Eds) Vol.8, pp. 183-205. La Jolla: California Sea Grant College. Zhang, J.F. & Xia, E. (1988). Chinese species of Gelidium Lamouroux and other Gelidiales (Rhodophyta) with key, list and distribution of common species.. In: Taxonomy of economic seaweeds with reference to some Pacific and Caribbean species. (Abbott, I.A. Eds) Vol.2, pp. 109-113. California Sea Grant College Program.

Habitat:	Marine and estuarine species, rock pools and sandy rocks, particularly in places with widely varying salinities such as upper-shore species
Type information:	Basionym: Fucus pusillus Stackhouse Type locality: Sidmouth, Devon, England (Athanasiadis 1996: 85). Lectotype: BM (Womersley & Guiry 1994: 135). Notes: Womersley & Guiry (1994: 135) note that a "provisional lectotype" was selected by Dixon & Irvine (1977a: 139).