Halophila stipulacea   (Forsskal) Ascherson,  1867 (Seagrass)
Organism information awaits expert curation
Taxonomy
Kingdom:Plantae
Phylum:Magnoliophyta
Class: Equisetopsida
Order:Alismatales
Family:Hydrocharitaceae

Image copyrights: Katrin Osterlund

Description
Plants dioecious. Rhizomes creeping, terete, branched, fleshy, semitransparent. Roots solitary, unbranched, with dense soft root hairs. Scales 2, the one embracing petioles broadly elliptic, subtruncate to subcordate at base, retuse at apex, entire along margins, convolute, transparent; the other embracing rhizomes broadly elliptic to obovate, subtruncate at base, retuse at apex, entire along margins, convolute, transparent. Shoots upto 7.5 cm long, erect, rarely branched, with 2 leaves at each node. Petioles flat, sheathing at base.
Flowers solitary, axillary, subtended by spathes. Female flowers solitary, axillary. Spathes oblong-elliptic to ovate, truncate at base, obtuse at apex, keeled, entire along margins, ciliate at midrib. Ovary ellipsoid, pale green. Hypanthium terete, slender, semitransparent, persistent. Styles 3, slender, papillose adaxially, smooth abaxially. Fruits ovoid, to subglobose. Pericarp membranous. Seeds globose, abruptly beaked at both ends. Male flowers mostly not seen, probably the appearance of male flowers is for a very short period and is ephemeral. Female flowers and fruits from February to April.


Synonym (s)
Zostera stipulacea Forsskal, 1775
(Homotypic synonym)

Common Name (s)
• Elai Paasi (Tamil)
• Kadal Paasi (Tamil)
Economic Importance and Threats

Ecology
Habitat:  Reef Associated, Sandy, Coastal

Biogeography


• Tamil Nadu, Krusadai Island INDIA (Record: 18/02/1987, 21/04/1988) (Depth: 3-4 mts)
• Tamil Nadu, Thanjavur, Adhirampattinam INDIA (Record: 15/09/1987) (Depth: 4 mts)
• Tamil Nadu, Thanjavur, Mallipattinam INDIA (Record: 16/09/1987) (Depth: 4 mts)
• Tamil Nadu, Manora INDIA (Record: 17/09/1987) (Depth: 2 mts)
• Tamil Nadu, Pudukottai, Manamelkudi INDIA (Record: 21/09/1987)
• Tamil Nadu, Mimisal INDIA (Record: 22/09/1987) (Depth: 5 mts)
• Tamil Nadu, Krusadai Island INDIA
• Tamil Nadu, Tuticorin Coast INDIA
• Tamil Nadu, Muttukadu Estuary INDIA (Record: 1988-1989)
• Tamil Nadu, Kalpakkam, Idaiyar Estuary INDIA (Record: 1988-1989)
• Tamil Nadu, Paramakeni Estuary INDIA (Record: 1988-1989)
• Tamil Nadu, Kadapakkam Estuary INDIA (Record: 1988-1989)
• Tamil Nadu, Thenpakkam Estuary INDIA (Record: 1988-1989)
• Tamil Nadu, Cuddalore, Uppanar Estuary INDIA (Record: 1988-1989)
• Tamil Nadu, Vellar Estuary INDIA (Record: 1988-1989)
• Tamil Nadu, Vellar-Coleroon Estuary INDIA (Record: 1988-1989)
• Tamil Nadu, Pichavaram INDIA (Record: 1988-1989)
• Tamil Nadu, Alantalai-Manapad INDIA (Record: 03/1988)
• Tamil Nadu, Vembar-Nallatanni Tivu INDIA (Record: 03/1988)
• Tamil Nadu, Krusadai INDIA
• Palk Bay INDIA (Record: 01/1987-09/1988)
• Tamil Nadu, Krusadai Island INDIA (Record: 01/1987-09/1988)

Literature Source(s)
  • 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 - http://www.marinespecies.org
  • (2006) Algaebase Available at - http://www.algaebase.org/
  • Gnanambal, KME and Patterson, J (2006) Insecticidal properties of Halophila stipulacea Seaweed Research and Utilisation Seaweed Research and Utilisation Association and Suganthi Devadason Marine Research Institute 28(1) 159-163 Available at - NIO, Goa
  • Kalimuthu, S; Kaliaperumal, N and Ramalingam, JR (1995) Distribution of algae and seagrasses in the estuaries and backwaters of Tamil Nadu and Pondicherry Seaweed Research and Utilisation Seaweed Research and Utilisation Association 17(1-2) 79-86 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
  • 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 - http://www.casmbenvis.nic.in/sdnp/coral%20reef%20pdf/C11.pdf
  • Stoddart, DR and Fosberg, FR (1972) South Indian sand cays Atoll Research Bulletin 161 1-25 Available at - http://si-pddr.si.edu/jspui/bitstream/10088/5054/1/00161.pdf
  • Parthasathy, N; Ravikumar, K; Ganesan, R and Ramamurthy, K (1991) Distribution of seagrasses along the coast of Tamil Nadu, Southern India Aquatic botany Elsevier 40(1) 145-153 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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