1. Family: Arecaceae Bercht. & J.Presl
    1. Genus: Calamus L.
      1. Species: Calamus perakensis Becc.
        1. Calamus perakensis var. crassus J.Dransf.

        This variety is accepted, and its native range is Peninsula Malaysia (Trengganu).

    [PW]
    Distribution
    Trengganu: endemic.
    General Description
    Solitary erect short-stemmed rattan with stems rarely exceeding 2 m tall. Stem without sheaths to 2.5 cm in diameter with very prominent nodes, and internodes to 3 cm only. Stem with sheaths to 4 cm in diameter. Sheaths dull green armed with scattered brown erect spines of length varying from 1-4.5 cm, slightly less armed at base of petiole; spines around leaf sheath mouth occasionally conspicuously longer, and erect, brownish; brown indumentum abundant between spines. Knee absent. Flagellum absent. Leaf ecirrate to 3 m tall, with petiole to 2 m armed with pale green spines. Leaflets regular, about 40 on each side of rachis the longest to 40 cm long by 2.5 cm wide conspicuously 3 nerved, armed with sparse bristles on margins and upper surface of nerves, conspicuously and rather densely armed with bristles along 3 nerves near the tip on the undersurface. Uppermost leaflets not strongly divergent. Inflorescences, male much more highly branched than female, to 1.5 m long, with peduncular portion densely spiny, to 60 cm long. Partial inflorescences to 3, rarely more. Bracts large, with tattered limb to 40 cm long by 8 cm wide, very sparsely armed; male rachillae to 1 cm long, female to 10 cm. ± mature fruit rounded c 6 mm in diameter very conspicuously beaked, covered in 17 vertical rows of pale brown scales. Seed rounded; endosperm homogeneous.
    Vernacular
    rotan tekokgunung
    [PW]
    Use
    Can be used for making walking sticks.

    Images

    Distribution

    Calamus perakensis var. crassus J.Dransf. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Dransfield, J. [JD 5170], Peninsular Malaysia K000207773 isotype

    First published in Malaysian Forester 41: 336 (1978)

    Accepted by

    • Govaerts, R. & Dransfield, J. (2005). World Checklist of Palms: 1-223. The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.

    Literature

    Palmweb - Palms of the World Online
    • J. Dransfield, A Manual of the rattans of the Malay Peninsula. Malayan Forest Recirds 29.. 1979

    Sources

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Kew Names and Taxonomic Backbone
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Palmweb - Palms of the World Online
    Palmweb 2011. Palmweb: Palms of the World Online. Published on the internet http://www.palmweb.org. Accessed on 21/04/2013
    Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License http://creativecommons.org/licenses/by-nc-sa/3.0