Calamus penicillatus Roxb., Fl. Ind. ed. 1832 , 3: 781 (1832)

Primary tabs

no image available

Distribution

Map uses TDWG level 3 distributions (http://www.nhm.ac.uk/hosted_sites/tdwg/geogrphy.html)
Malayapresent (World Checklist of Arecaceae)B
Penang: Penang Hill. Endemic. (J. Dransfield, A Manual of the rattans of the Malay peninsula. 1979)A

Discussion

  • Calamus penicillatus is known from a very few collections, all made on Penang Hill. It still grows on the hill, where it has been found at 650 m altitude growing on a steep slope near a small stream, in hill Dipterocarp forest. It is easily distinguished by its very small size, the upward pointing sheath spines and the very small leaf with few leaflets. (J. Dransfield, A Manual of the rattans of the Malay peninsula. 1979)A

Common Name

  • rotan batu (J. Dransfield, A Manual of the rattans of the Malay peninsula. 1979)A

Etymology

  • Penicillatus - pencil like, probably referring to the very slender stem (J. Dransfield, A Manual of the rattans of the Malay peninsula. 1979)A

Uses

  • This appears to be a first class cane but of very small diameter. This species however is extremely rare. (J. Dransfield, A Manual of the rattans of the Malay peninsula. 1979)A

Description

  • Extremely slender clustering rattan climbing to 40 m tall. All pans drying pale. Stem without sheaths 2 - 4 mm in diameter, with sheaths to 7 mm, with internodes about 10 cm in length; sheaths dull green armed with upward pointing yellowish bulbous-based, black tipped spines 1 - 2 mm long, and scattered brownish scales. Knee conspicuous; Ocrea inconspicuous. Flagellum to 30 cm only. Leaf 40 cm long, ecirrate, without a petiole, bearing 3 - 4 leaflets on each side of the rachis; leaflets inequidistant, the terminal two slightly joined, bright green, thick textured, with rather conspicuous cross veins, the largest 15 cm long by 3 cm wide, usually less. Inflorescence male and female superficially similar very slender, rarely more than 60 cm long, with 4-5 partial inflorescences, to 15 cm long. Rachillae about 4 cm long. Fruit unknown; seedling leaf unknown. (J. Dransfield, A Manual of the rattans of the Malay peninsula. 1979)A

Bibliography

    A. J. Dransfield, A Manual of the rattans of the Malay peninsula. 1979
    B. World Checklist of Arecaceae