Calamus unifarius var. pentong Becc., Fl. Brit. India 6: 458 (1893)

Primary tabs

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Distribution

Map uses TDWG level 3 distributions (https://github.com/tdwg/wgsrpd)
Nicobar Is. present (World Checklist of Arecaceae)B
Evergreen forests. Great Nicobar. (Map. 7). (Renuka, C. 1995: A Manual of the Rattans of Andaman and Nicobar Islands)A

Biology And Ecology

  • Flowering November - December. Fruiting April-May. (Renuka, C. 1995: A Manual of the Rattans of Andaman and Nicobar Islands)A

Common Name

  • Hara beth (Renuka, C. 1995: A Manual of the Rattans of Andaman and Nicobar Islands)A

Uses

  • Used in the furniture industry. Not exploited much. (Renuka, C. 1995: A Manual of the Rattans of Andaman and Nicobar Islands)A

Description

  • Solitary, medium diameter rattan. Stem to 20 m long, with sheaths 3.5 cm in diameter, without sheaths upto 2 cm. green when exposed. Leaf 5 m long, cirrate: sheath yellowish green with numerous small spines; spines 0.5 cm long, 3-4 spines grouped together, the groups arranged vertically or horizontally; knee prominent; ocrea not seen; petiole absent; rachis spiny; leaflets alternate, regular, 35 x 6 cm, apical leaflets 40 x 4 cm, drooping.elliptic, usually 5 veined,tips and margins bristly. Inflorescence long flagellate; male inflorescence much branched; rachilla 3 cm long; female inflorescences simply decompound; primary sheaths tightly sheathing, armed with small spines; partial inflorescence to 25 cm long; secondary sheaths to 2 cm long, funnel -shaped; rachillae to 8 cm long, decreasing in length distally; involucrophorum slightly stalked, involucre disc-shaped, fruiting perianth persisting. Fruit oblong, ca. 1.5 x 1 cm, scales in 17 vertical rows, ivory white with brown border, slightly channelled; endosperm not ruminate. (Renuka, C. 1995: A Manual of the Rattans of Andaman and Nicobar Islands)A

Materials Examined

  • Kamorta, Nicobar Islands, Feb. 1875 Kurzs.n. (CAL) Katchal, 23.3.1997, Chakraborty 5290 (CAL); Galathea Wildlife Camp, Nicobar, 12.4.1993, fr., Renuka and Vijayakumaran 7045 (KFRI). (Renuka, C. 1995: A Manual of the Rattans of Andaman and Nicobar Islands)A

Bibliography

    A. Renuka, C. 1995: A Manual of the Rattans of Andaman and Nicobar Islands
    B. World Checklist of Arecaceae