1. Family: Arecaceae Bercht. & J.Presl
    1. Genus: Calamus L.
      1. Calamus leptopus Griff.

        This species is accepted, and its native range is Peninsula Thailand to Malaya.

    [PW]
    Distribution
    Perak, Kelantan, Trengganu, Pahang, Selangor, Negri Sembilan, Malacca, Johore, Singapore. Endemic.
    Vernacular
    rotan bacap
    General Description
    Robust rattan, clustering but with few stems, reaching about 15m. Stem without sheaths up to 2.5 cm in diameter, usually less. Internodes to 18 cm long, much less in upper parts of mature flowering individuals. Stem with sheaths usually about 3 cm diameter exceptionally up to 6 cm. Sheath dull green, mottled with yellow and black, armed with scattered reflexed very rigid spines, these particularly below the knee in groups of 3-8. Largest spines about 4 cm, usually less than 2 cm. Knee conspicuous, with a rounded protrusion, hardly wrinkled below as in most species, the two lateral faces inerm, but armed along the mid-line with scattered or grouped spines like the sheath. Leaf very large, often up to 5 m in length with petiole to 50 cms long and cirrus to 2 m. Petiole yellowish green with grey mottling surrounding each spine, this distinctive colouration continuing along length ofrachis. Leaflets up to about 40 on each side ± regularly arranged pendulous rather distant, bright green, to about 35 cm long by 2 cm wide. Inflorescences male and female superficially similar with up to 13 partial inflorescences, bracts all but the first quickly falling, the first bract to 25 cm or more long by 6.5 cm wide, with 2 keels armed with distant spines to 2 cm long, all bracts extremely tough and leathery, almost woody. Mature fruit to 18 mm long by 10 mm wide, ovate oblong, covered with 15 vertical rows of dull brown scales, with darker margins. Seedling unknown.
    [PW]
    Use
    Cane for restricted local use. Leaflets of the swordleaf, dried, used by Temuan Orang Asli as cigarette papers.

    Images

    Distribution

    Native to:

    Malaya, Thailand

    Calamus leptopus Griff. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Griffith [s.n.], Peninsular Malaysia Daemonorops leptopus K000207664 isotype
    Griffith [6375], Peninsular Malaysia Daemonorops leptopus K000207663 isotype

    First published in Calcutta J. Nat. Hist. 5: 73 (1845)

    Not accepted by

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

    Literature

    Kew Backbone Distributions
    • Henderson, A. (2009). Palms of Southern Asia: 1-197. Princeton university press, Princeton and Oxford.

    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