Cymodocea rotundata   Ehrenberg & Hemprich ex Ascherson,  1870 (Seagrass)
Organism information awaits expert curation
Class: Equisetopsida

Image copyrights: NRE

Plants dioecious. Rhizomes creeping, branched, flexible, fibrous, jointed, white to pale brown. Roots single at each node, branched. Internodes upto 4 cm long. Shoots erect, rarely many branches crowded at tip, each bearing 3-4 leaves. Stems erect, upto 6 cm long. Internodes with persistent closed circular leaf scars. Male flowers stalked. Anthers ca 11 mm long. Female flowers sessile, axillary. Ovary very small, gradually passing into the style. Stigma spirally coiled. Fruits 1 or 2 together, sessile, semicircular in outline, laterally compressed, parallel ridges of which the median one is set with 6-8 conspicuous acute teeth and one ventral ridge bearing 3-4 teeth. Exocarp sclerenchymatous, covered with numerous longitudinal tannin cells. Beak apical, ca 2 mm long, suboblique, persistent.

Synonym (s)

Common Name (s)
• Alai Vaari (Tamil)
• Kadal Karumbu (Tamil)
• Kadal Korai (Tamil)
• Kadal Paasi (Tamil)
• Kadal Thazhai Paasi (Tamil)
• Karumbu Paasi (Tamil)
• Kattai Korai (Tamil)
• Korai Paasi (Tamil)
• Neer Pasalai (Tamil)
• Thazhai Paasi (Tamil)
• Vaataalai (Tamil)
• Vellai Kadal Korai Paasi (Tamil)
Economic Importance and Threats

Habitat:  Reef Associated, Rocky, Sandy, Muddy, Coastal


• Lakshadweep, Kavaratti (Lat: 10.57) (Long: 72.62) INDIA
• Lakshadweep, Agatti (Lat: 10.83) (Long: 72.2) INDIA
• Lakshadweep, Minicoy (Lat: 8.12) (Long: 73.3) INDIA
• Andaman and Nicobar Islands INDIA
• Tamil Nadu, Tuticorin INDIA (Record: 02/10/1916)
• Tamil Nadu, Rameswaram INDIA (Record: 13/02/1987) (Depth: ±1.5 mts)
• Tamil Nadu, Mandapam INDIA (Record: 16/02/1987, 24/09/1987, 20/04/1988) (Depth: 3-4 mts)
• Tamil Nadu, Hare Island INDIA (Record: 21/02/1987) (Depth: ±2 mts)
• Tamil Nadu, Nellai Kattabomman, Nadar Uvari INDIA (Record: 20/07/1987) (Depth: ±4 mts)
• Tamil Nadu, Pudukottai, Kattumavadi INDIA (Record: 20/09/1987) (Depth: ±4 mts)
• Tamil Nadu, Pamban INDIA (Record: 26/09/1987, 23/04/1988) (Depth: 1.5-2 mts)
• Tamil Nadu, Mandapam, Thonithurai INDIA (Record: 20/04/1988) (Depth: ±1.5 mts)
• Tamil Nadu, Krusadai Island INDIA (Record: 21/04/1988, 25/09/1987, 24/09/1944) (Depth: 1.5-2 mts)
• Tamil Nadu, Rameswaram, Ramatheertham INDIA (Record: 24/04/1988) (Depth: ±2.5 mts)
• Tamil Nadu, Rameswaram, Sangumal INDIA (Record: 24/04/1988) (Depth: ±1.5 mts)
• Tamil Nadu, Tuticorin, Alankarathattu INDIA (Record: 27/04/1988) (Depth: ±4 mts)
• Tamil Nadu, Tuticorin Harbour INDIA (Record: 30/04/1988) (Depth: ±2.5 mts)
• Tamil Nadu, Krusadai Island INDIA (Record: 1944)
• Lakshadweep INDIA
• Tamil Nadu INDIA
• Tamil Nadu, Arockiapuram Coast (Lat: 8.10) (Long: 77.57) INDIA (Record: 09/1995-11/1995)
• Tamil Nadu, Alantalai-Manapad INDIA (Record: 03/1988)
• Tamil Nadu, Vembar-Nallatanni Tivu INDIA (Record: 01/1989)
• Tamil Nadu, Pamban INDIA
• Tamil Nadu, Krusadai INDIA
• Tamil Nadu, Manoli Island INDIA
• Tamil Nadu, Gulf of Mannar, Hare Island INDIA
• Tamil Nadu, Gulf of Mannar INDIA
• Tamil Nadu, Gulf of Mannar, Manauli Island INDIA
• Andaman and Nicobar Islands, Andamans INDIA
• Lakshadweep, Bangaram INDIA
• Lakshadweep, Agatti INDIA
• Lakshadweep, Kavaratti INDIA
• Lakshadweep, Kalpeni INDIA
• Andaman and Nicobar Islands, Great Nicobar Island INDIA
• Andaman and Nicobar Islands, Car Nicobar Island INDIA
• Andaman and Nicobar Islands, Katchall INDIA
• Andaman and Nicobar Islands, Nancowry INDIA

Literature Source(s)
  • Jagtap, TG (1987) Distribution of algae, seagrasses and coral communities from Lakshadweep islands, eastern Arabian Sea Indian Journal of Marine Sciences Publications and Information Directorate, CSIR, New Delhi in association with The Indian National Science Academy, New Delhi 16(4) 256-260 Available at - NIO, RC, Kochi
  • Untawale, AG and Jagtap, TG (1989) Observations on marine macrophytes of the Republic of Seychelles Botanica Marina Walter de Gruyter, Berlin 32 115-119 Available at - NIO, Goa
  • Khoja, TM (1987) New records of marine algae for the Red Sea coast of Saudi Arabia Botanica Marina Walter de Gruyter, Berlin. New York 30 167-176
  • Saad, MAH (1984) Proceedings of the Symposium on Coral Reef environment of the Red Sea King Abdulaziz University, Saudi Arabia 1-681 Available at - NIO, RC Kochi
  • Jagtap, TG and Untawale, AG (1984) Chemical Composition of Marine Macrophytes and their sorrounding water and sediments, from Minicoy, Lakshaweep Indian Journal of Marine Sciences 13 123-125 Available at - NIO, RC Kochi
  • Venkataraman, K; Satyanarayana, CH; Alfred, JRB and Wolstenholme, J (2003) Handbook on hard corals of India ZSI, Kolkata 266 pp Available at - NIO, Goa
  • Ramamurthy, K; Balakrishnan, NP; Ravikumar, K and Ganesan, R (1992) Seagrasses of Coromandel Coast India Botanical Survey of India, Coimbatore 80 pp Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Jagtap, TG; Komarpant, DS and Rodrigues, R (2003) The seagrasses of India World atlas of seagrasses University of California Press, Berkeley, USA 101-108 Available at - NIO, Goa
  • Venkataraman, K and Wafar, M (2005) Coastal and marine biodiversity of India Indian Journal of Marine Sciences 34(1) 57-75 Available at - NIO, Goa
  • Roslin, AS; Rosakutty, PJ and Lazarus, S (1997) A study on the flora and fauna of Arockiapuram Coast of Tamil Nadu Seaweed Research and Utilisation Seaweed Research and Utilisation Association 19(1-2) 55-61 Available at - NIO, Goa
  • Kaliaperumal, N; Chennubhotla, VSK; Kalimuthu, S; Ramalingam, JR; Pillai, SK; Muniyandi, K; Rao, KR; Rao, PVS; Thomas, PC; Zaidi, SH and Subbaramaiah, K (1998) Seaweed resources and distribution in deep waters from Dhanushkodi to Kanyakumari, Tamilnadu Seaweed Research and Utilisation Seaweed Research and Utilisation Association, Tamil Nadu, India 20(1&2) 141-151 Available at - NIO, Goa
  • (2006) Algaebase Available at -
  • Thangaradjou, T and Kannan, L (2005) Marine sediment texture and distribution of seagrasses in the Gulf of Mannar Biosphere Reserve Seaweed Res Utilis NISCAIR 27(1&2) 145 - 154 Available at -
  • Tanaji,G; Jagtap, Deepali,S; Komarpant, and Rodrigues, RS (2003) Status of a seagrass ecosystem:an ecologically sensitive wetland habitat from India Wetlands 23(1) 161–170 Available at -
  • Stoddart, DR and Fosberg, FR (1972) South Indian sand cays Atoll Research Bulletin 161 1-25 Available at -
  • Thangaradjou, T; Nobi, EP; Dilipan, E; Sivakumar, K and Sushila, S (2010) Heavy metal enrichment in seagrasses of Andaman Islands and its implications on the health of the coastal ecosystem Indian Journal of Marine Sciences NISCAIR 39(1) 85-91 Available at -
  • Kaliaperumal, N; Kaladharan, P and Kalimuthu, S (1989) Seaweed and seagrass resources Marine living resources of the union territory of Lakshadweep: An indicative survey with suggestions for development Bulletin of Central Marine Research Institute CMFRI 43 162-176 Available at -
  • Jagtap, T.G. (1992) Marine flora of Nicobar group of islands in Andaman Sea. Indian Journal of Marine Sciences National Institute of Science Communication & Information Resources 21(1) 56-58 Available at - NIO,Goa
  • Jagtap, TG (1991) Distribution of seagrasses along the Indian coast Aquatic Botany Elsevier B.V. 40(1) 379-386 Available at - NIO, Goa

Page last updated on:2011-09-29

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