Sargassum polycystum   C. Agardh,  1824 (Algae)
Organism information awaits expert curation
Class: Phaeophyceae

Image copyrights: Huang Su-fang

Size: Height up to 50 cm or more.

Plants possessing a dense rhizoidal basal system, giving rise to several erect primary branches, 10-15 cm long. Axes of the plants muricated due to presence of short processes. Leaves 1-2.5 cm long, rigid or membranous, ovate-oblong or narrow-lanceolate, apices obtuse or acute, margins widely dentate, cryptostomata scattered on both sides of the midrib. Vesicles and receptacles occurring together in clusters, arising from the axils of the leaves. The former originating from the lower receptacular branches. Vesicles spherical, small, numerous, each borne on a 1-2 mm stalk, cryptostomata present on the surface of the vesicles.

Receptacles forming racemes, 6-12 cm long, filiform and elongated, sometimes foliaceous at the upper part, resembling linear leaves with toothed margins.

Synonym (s)
Sargassum ambiguum Sonder, 1871
(Heterotypic synonym)
Sargassum brevifolium Greville, 1849
(Heterotypic synonym)
Sargassum brevifolium Silva et al., 1996
Sargassum pygmaeum Kutzing, 1849
(Heterotypic synonym)
Sargassum polycystum var. horridulum Grunow, 1874
(Heterotypic synonym)
Sargassum brevifolium Greville, 1889
Sargassum geudichandii Mont. (cf. J. Agardh), 1889
Sargassum onustum Harvey (cf. De Toni), 1895
Sargassum microphyllum Yendo (non Agardh), 1907
Sargassum myriocystum J. Agardh, 1848
(Heterotypic synonym)
Sargassum polycystum C. Agardh, 1824
Sargassum elegans Greville, 1849
(Heterotypic synonym)
Sargassum opacum J. Agardh, 1889
(Heterotypic synonym)
Sargassum myriocystum var. elegans Grunow, 1915
(Heterotypic synonym)

Common Name (s)
Economic Importance and Threats
Importance:  Commercial
(Bio-fertilizer. Used as raw material for manufacturing sodium alginate.)

Habitat:  Rocky, Coastal


• Tamil Nadu, Chennai (Lat: 13.09) (Long: 80.29) INDIA
• Tamil Nadu, Pamban (Lat: 9.29) (Long: 79.21) INDIA
• Tamil Nadu, Krusadai Island (Lat: 9.23) (Long: 79.22) INDIA
• Andaman and Nicobar Islands, Andaman Islands (Lat: 11.12) (Long: 92.82) INDIA
• Tamil Nadu INDIA
• Andhra Pradesh, Vishakhapatnam (Lat: 17.7) (Long: 83.3) INDIA
• Tamil Nadu, Mandapam (Lat: 9.28) (Long: 79.12) INDIA
• Tamil Nadu, Mandapam INDIA
• Tamil Nadu, Hare Island INDIA
• Andaman and Nicobar Islands, Andaman Islands INDIA
• Tamil Nadu, Kilakarai INDIA (Record: 1986-1988)
• Tamil Nadu, Pamban Coast INDIA

Literature Source(s)
  • Hussain, SM Brief report on biodiversity in the coastal areas of Pakistan p 113
  • (2006) Algaebase Available at -
  • Jassund, E (1977) Marine algae in Tanzania VIII Botanica Marina Walter de Gruyter, Berlin 20 509-520 Available at - NIO, Goa
  • Sahoo, D; Nivedita and Debasish (2001) Seaweeds of Indian coast S. B. Nangia, A. P. H. Publishing Corporation, New Delhi 283 pp Available at - NIO, Goa
  • Tore, L; Hoppe, HA and Otto, JS (1969) Marine Algae Asurvey of Research and Utilization Cram, De Gruyter and Co., Hamburg 1-421 Available at - NIO, RC Kochi
  • Silva, PC; Basson, PW and Moe, RL (1996) Catalogue of the benthic marine algae of the Indian Ocean University of California Press 79 1259 pp Available at - NIO, Goa
  • Bolton, JJ; Oyieke, HA and Gwada, P (2007) The seaweeds of Kenya: Checklist, history of seaweed study, coastal environment, and analysis of seaweed diversity and biogeography South African Journal of Botany 73 76-88 Available at - NCL, Pune
  • Eric, C; Frederik, L;, Heroen, V; de Olivier, C; Tom, S; de Thomas, V and Marie, D (2004) The marine green and brown algae of Rodrigues (Mauritius, Indian Ocean) Journal of Natural History 38 2959-3020
  • Phang, SM (2006) Seaweed resources in Malaysia: Current status and future prospects 9(2) 185-202 Available at - NCL, Pune
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Sujatha, K and Ramamoorthy, K (2008) Bio-fertilizing efficiency of seaweed extracts for growth and yield attributes in blackgram cv. VBN 3 (Vigna mungo I. Hepper). Proceedings of the national symposium on marine and coastal ecosystems 27-29, August 2007 Seaweed Research and Utilisation Seaweed Research and Utilisation Association, Marine Fisheries- 623 520, Tamilnadu, India 30 227-232 Available at - NIO, Goa
  • Kumaresan, S; Jothibai Margret, R and Indra Jasmine, G (2007) Chloroperoxidase activity in some marine algae from Tuticorin coast of Tamilnadu Seaweed Research and Utilisation Seaweed Research and Utilisation Association, Tamil Nadu, India 29(1 & 2) 63-66 Available at - NIO, Goa
  • Mishra, JN (1966) Phaeophyceae in India ICAR 203 pp Available at - NIO, Goa
  • Krishnamurthy, V (2006) Key to the taxonomic identification of green and brown marine algae of India Recent advances on applied aspects of Indian marine algae with reference to global scenario. Seaweed taxonomic identification, aquaculture, resource, environment, fouling and disease Central Salt and Marine Chemicals Research Institute, Bhavnagar 1 1-146 Available at - NIO, Goa
  • Kaliaperumal, N; Kaliamuthu, S and Ramalingam, JR (1996) Effect of repeated harvesting on the growth of Sargassum spp and Turbinaria conoides occurring in Mandapam area Seaweed Research and Utilisation Seaweed Research and Utilisation Association 18(1-2) 57-66 Available at - NIO, Goa
  • Selvaraj, R and Sivakumar, K (1998) Biochemical studies on three species of Sargassum Seaweed Research and Utilisation Seaweed Research and Utilisation Association, Tamil Nadu, India 20(1&2) 59-62 Available at - NIO, Goa

Page last updated on:2010-09-22

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