Calamus acuminatus Becc., Ann. Roy. Bot. Gard. (Calcutta) 11(App.): 16 (1913)

Primary tabs

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Distribution

Map uses TDWG level 3 distributions (http://www.nhm.ac.uk/hosted_sites/tdwg/geogrphy.html)
Borneo present (World Checklist of Arecaceae)B
Widespread throughout the State, but particularly abundant in the Tenom and Keningau districts. Endemic to Sabah. (J. Dransfield, The Rattans of Sabah. Sabah Forest Records 13.. 1984)A

Discussion

  • Very close to C. javensis but differing in the consistently ± regular narrow lanceolate leaflets and the very small spherical fruit. This is very much a feature of the secondary forests of the Tenom / Keningau valleys. It is abundant in roadside belukar, and one can often see its cane for sale in bundles at roadside stalls and in "tamu" (weekly markets). (J. Dransfield, The Rattans of Sabah. Sabah Forest Records 13.. 1984)A

Common Name

  • "rotan padas", "rotan peladas" (J. Dransfield, The Rattans of Sabah. Sabah Forest Records 13.. 1984)A

Etymology

  • Pointed, referring to the leaflet shape (J. Dransfield, The Rattans of Sabah. Sabah Forest Records 13.. 1984)A

Uses

  • Widespread local use as twine, perhaps receiving a rudimentary cultivation near villages. (J. Dransfield, The Rattans of Sabah. Sabah Forest Records 13.. 1984)A

Description

  • Slender clustering rattan with stems climbing to 10 m or more; stem without sheaths to 4 mm, with sheaths to 8 mm; internodes to 20 cm. Sheaths mid-green, with scattered brown scales, unarmed, or rarely with a few scattered spines. Knee well-developed. Ocrea conspicuous, especially on young sheaths, to 15 mm. Flagellum to 1 m. Leaf ecirrate, to 35 cm, with no petiole; leaflets up to 12 on each side of the rachis, regularly arranged, narrow lanceolate to 16 x 2 cm, the lowermost somewhat smaller and swept back across the stem, bright green, shining; terminal leaflet pair joined for under 1/2 of their length; young leaves tinged pink. Male and female inflorescences similar, very similar to those of C. javensis but with more branches. Mature fruit small, spherical, c. 6 mm diam., with a short beak to 1 x 1 mm, and covered in 18 vertical rows of pale straw-coloured scales; seed rounded c 4 mm diam.; endosperm homogeneous. (Fig. 67) (J. Dransfield, The Rattans of Sabah. Sabah Forest Records 13.. 1984)A

Bibliography

    A. J. Dransfield, The Rattans of Sabah. Sabah Forest Records 13.. 1984
    B. World Checklist of Arecaceae