Syringodium isoetifolium   (Ascherson) Dandy,  1939 (Seagrass)
Organism information awaits expert curation
Taxonomy
Kingdom:Plantae
Phylum:Magnoliophyta
Class: Equisetopsida
Order:Alismatales
Family:Cymodoceaceae

Image copyrights: McKenzie et al

Description
Rhizomes creeping, herbaceous, branched, slender, fleshy, white to pale yellow; roots 1-5 at each node, sparsely to well branched; root hairs soft, minute, many; internodes upto 2.7 cm long, swollen at nodes; scales linear-oblong, subtruncate at base, acute to obtuse at apex, hyaline, convolute, entire along margins, with numerous longitudinal, discontinuous tannin dashes. Shoots upto 60 cm long, erect, branched or unbranched, bearing 2-3 leaves at each branch; internodes upto 7.5 cm long; leaf sheaths tubular, narrowed at base, retuse at apex, persisting longer than blades, with numerous vertical, tannin dashes, greenish brown; lamina terete, narrowed at base, fleshy, brittle, green, in cross-section showing 1 central vascular bundle surrounded by 7-8 pericentral vascular bundles. Inflorescences upto 29 cm long; flowers terminal cymes, the lower branches dichasial, the upper branches monochasial, enclosed or subtended by reduced leaf sheaths and scales; floral sheaths oblong, subtruncate at base, obtuse at apex, convolute, hyaline, entire along margins with many tannin streaks; towards tips of inflorescence the lamina gradually decreases or disappears; scales linear-oblong, subtruncate at base, acute to obtuse at apex, hyaline, convolute, entire along margins with tannin cells.
Male flowers upto 1.4 cm long. Erect; stalks terete, erect, stiff, brownish, persistent; anthers 2, oblongoid, dorsally connate, equal, dehiscing by vertical slits; pollen grains oblongoid, contained in a mucilaginous sheath forming threads. Female flowers 5-9 mm long, sessile; ovaries 2, ovoid, sessile, brown; styles terete; stigmata bifid, subulate, recurved, brown; fruits obliquely ellipsoid, angular; pericarp stony; beak bifid; embryo ellipsoid.


Synonym (s)
Cymodocea isoetifolia Ascherson, 1867
(Homotypic synonym)

Common Name (s)
• Kadal Korai (Tamil)
• Kadal Paasi (Tamil)
• Kadal Thazhai (Tamil)
• Karumbu Paasi (Tamil)
• Korai Paasi (Tamil)
Economic Importance and Threats
Importance:  Commercial
(Exhibits antioxidant properties; suitable as fertilizer)

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

Biogeography


• 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
• Tamil Nadu, Manoli Island (Lat: 9.2) (Long: 79.11) INDIA (Record: 09/2006)
• Tamil Nadu, Pudumadam INDIA
• Tamil Nadu, Idinthakarai Coast INDIA
• Tamil Nadu, Chinnamuttom INDIA
• Tamil Nadu, Tuticorin INDIA
• Tamil Nadu, Hare Island INDIA (Record: 21/02/1987, 28/04/1988) (Depth: 2-3 mts)
• Tamil Nadu, Tuticorin, Thirespuram INDIA (Record: 22/02/1987) (Depth: ±3.5 mts)
• Tamil Nadu, Tiruchchendur INDIA (Record: 17/07/1987) (Depth: ±3 mts)
• Tamil Nadu, Manappadu INDIA (Record: 19/07/1987) (Depth: ±4 mts)
• Tamil Nadu, Idinthakarai INDIA (Record: 23/07/1987) (Depth: ±4 mts)
• Tamil Nadu, Thanjavur, Adhirampattinam INDIA (Record: 15/09/1987) (Depth: ±5 mts)
• Tamil Nadu, Thanjavur, Mallipattinam INDIA (Record: 16/09/1987) (Depth: ±6 mts)
• Tamil Nadu, Manora INDIA (Record: 17/09/1987) (Depth: ±4 mts)
• Tamil Nadu, Pudukottai, Kattumavadi INDIA (Record: 20/09/1987) (Depth: ±3 mts)
• Tamil Nadu, Pudukottai, Manamelkudi INDIA (Record: 21/09/1987) (Depth: ±5 mts)
• Tamil Nadu, Mimisal INDIA (Record: 22/09/1987) (Depth: ±5 mts)
• Tamil Nadu, Pudukottai, Jagathapattinam INDIA (Record: 22/09/1987) (Depth: ±5 mts)
• Tamil Nadu, Pudukottai, Kottaipattinam INDIA (Record: 22/09/1987) (Depth: ±5 mts)
• Tamil Nadu, Krusadai Island INDIA (Record: 25/09/1987, 18/02/1987, 25/09/1944) (Depth: ±1.5 mts)
• Tamil Nadu, Rameswaram, Ramatheertham INDIA (Record: 24/04/1988) (Depth: ±2 mts)
• Tamil Nadu, Tuticorin Harbour INDIA (Record: 30/04/1988) (Depth: ±4.5 mts)
• Lakshadweep INDIA
• Tamil Nadu INDIA
• Andaman and Nicobar Islands INDIA
• Kerala, Trivandrum INDIA
• Tamil Nadu, Arockiapuram Coast (Lat: 8.10) (Long: 77.57) INDIA (Record: 09/1995-11/1995)
• Tamil Nadu, Kootapuzhi Coast INDIA
• Tamil Nadu, Kootapuzhi INDIA
• Tamil Nadu, Thonithurai INDIA
• Tamil Nadu, Pamban INDIA
• Tamil Nadu, Manoli Island INDIA
• Tamil Nadu, Gulf of Mannar, Hare Island INDIA
• Tamil Nadu, Krusadai Island INDIA
• Andaman and Nicobar Islands, Andamans INDIA
• Lakshadweep, Minicoy INDIA
• Lakshadweep, Kavaratti INDIA
• Tamil Nadu, Idinthakarai (Lat: 8.16) (Long: 77.73) INDIA (Record: 10/2003-12/2003)
• Palk Bay INDIA (Record: 01/1987-09/1988)
• Tamil Nadu, Rameswaram INDIA (Record: 01/1987-09/1988)
• Tamil Nadu, Krusadai Island INDIA (Record: 01/1987-09/1988)
• Tamil Nadu, Manappadu INDIA (Record: 01/1987-09/1988)
• Tamil Nadu, Nellai Kattabomman, Nadar Uvari INDIA (Record: 01/1987-09/1988)
• Tamil Nadu, Hare Island INDIA (Record: 01/1987-09/1988)

Literature Source(s)
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Page last updated on:2011-09-29

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