Calamus corrugatus Becc., Rec. Bot. Surv. India 2: 201 (1902)

Primary tabs

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Distribution

Map uses TDWG level 3 distributions (http://www.nhm.ac.uk/hosted_sites/tdwg/geogrphy.html)
Borneopresent (World Checklist of Arecaceae)B
Known from a few collections from the 1st Division (G Pueh, G Matang, Bako, Sabal Tapang, Semengoh) and one collection from the Hose Mountains. Not known elsewhere. Endemic. (J. Dransfield, The Rattans of Sarawak. 1992)A

Discussion

  • C. corrugatus is a very elegant species found in mixed dipterocarp forest and forest transitional to kerangas, from sea level to c. 900 m altitude. It is very easily identified by the neat, broad lanceolate leaflets and absence of petiole, together with the corrugated leaf sheath. (J. Dransfield, The Rattans of Sarawak. 1992)A

Etymology

  • Corrugated (J. Dransfield, The Rattans of Sarawak. 1992)A

Uses

  • The cane appears to be of excellent quality. (J. Dransfield, The Rattans of Sarawak. 1992)A

Description

  • Slender clustering rattan climbing to 15 m; stem without sheaths 2-4 mm diam., with sheaths to 5 mm diam., internodes to 12 cm long, usually less. Sheath dull brownish-green, reddish- tinged when young, unarmed but bearing rather regularly arranged low ridges, the sheath thus appearing corrugated', knee present; ocrea very short. Flagellum to c. 40 cm. Leaf ecirrate, to 35 cm long, but usually much shorter;petiole absent', rachis bearing rusty-red hairs; leaflets 4-8 on each side of the rachis, broadly lanceolate, acute or acuminate, usually strictly opposite, the basal 1 or 2 on each side smaller than the rest and swept back across the stem, the apical pair joined together for over half their length, the mid leaf leaflets to 13 x 2.5 cm, usually much less, transverse veinlets quite conspicuous; young leaf pinkish-tinged. Inflorescence without a terminal flagellum, to c. 90 cm, only the female known; partial inflorescences 2-3, borne towards the tip of the inflorescence; rachillae 3 - 5 cm long. Mature fruit ovoid, 10 x 7 mm, tipped with a conspicuous cylindrical beak to 2.5 mm; scales pale yellowish-brown, arranged in 14 vertical rows. Seed c. 8 x 4 mm, irregularly scalloped and faceted. Seedling leaf not known (Fig. 77). (J. Dransfield, The Rattans of Sarawak. 1992)A

Bibliography

    A. J. Dransfield, The Rattans of Sarawak. 1992
    B. World Checklist of Arecaceae