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Calamus rivalis
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Family:
ARECACEAE/PALMAE
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Citation: Calamus rivalis Thw. ex Trimen, J. Bot. 23: 386. 1885; Hook. f., Fl. Brit. India 6: 441. 1893; Renuka & Sreekumar, J. Econ. Tax. Bot. 30: 277. 2006.
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Malayalam Name(s):
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Tamil name(s):
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English name(s):
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Description:
Slender clustering rattans, climbing to a height of 10-15 m; stem diameter with sheath 1-2 cm, without sheath to 1 cm. Leaf-sheath green, armed with spines; spines solitary, horizontal or slightly deflexed, yellowish, 8-10 mm long, knee present; ochrea short, deciduous. Leaves 1-1.5 m long; petiole, if present, 2-3 cm long; leaflets ca 40 x 2 cm, regular, adaxilally without spines along the midvein or spinulose at the apex, ciliate beneath, middle-upwards, the margin spinulose. Inflorescence flagellate; male inflorescence ca 3 m long, partial inflorescence 20-30 cm long; rachilla ca 3 cm long; female inflorescence ca 3 m long, partial inflorescence ca 70 cm long; rachillae 5-10 on each side, terminating in a filiform, caudate appendix ca 8 cm long; fruiting perianth not pedicellate. Fruit very broadly ovoid, 11 mm long and 7-8 mm broad; scales in 21 vertical rows, not or very faintly channeled, straw yellow, violet when ripe, endosperm entire.
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Habit:
Climber
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Flowering & Fruiting:
Throughout the year
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District(s):
Kollam
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Medicinal:
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Habitat:
Restricted to plains along the backwaters and coasts, and in sacred groves
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Distribution:
South India and Sri Lanka
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Aquatic:
No
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Epiphyte(s):
No
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Saprophyte:
No
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Stem parasite:
No
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Root parasite:
No
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Flower colour(s):
Creamy, Yellow
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Weed:
No
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Monocot/Dicot:
Monocotyledonous Plants
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Exotic:
No
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Garden:
No
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Edible:
No
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Vegetable:
No
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Endemic to:
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IUCN status:
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Altitude:
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Localities:
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