1. Family: Arecaceae Bercht. & J.Presl
    1. Genus: Calamus L.
      1. Calamus polystachys Becc.

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

    [PW]
    General Description
    High climbing rattan clustering to form rather dense clumps or thickets. Stems without sheaths 1-2 cm in diameter, with sheaths to 3.5 cm. Internodes about 15 cm often much longer in juvenile stems. Sheaths with conspicuous knee; sheath bright green bearing numerous whorls or partial whorls of fine black horse-hair-like spines, the bases of which united to form green collars encircling the stem, some of the collars upward pointing, others reflexed, at least some collars interlocking in pairs to form galleries usually occupied by ants. Leaves to 2.5 m long with cirrus to 80 cms and petiole 6 cm only on mature stems, longer in juveniles. Leaflets about 60 on each side of the rachis bright green, regularly arranged, rather narrow about 30-40 cm long by 1 cm wide, bristly on both surfaces. Inflorescence emerging from mouth of leaf sheath, about 50 cm long, without terminal flagellum, with 7-8 partial inflorescences on each side of the axis, the partial inflorescences subtending sparsely spiny or inerm bracts each on subtending 3 flower-bearing branches; male and female flowers both small, distichous. Fruit at maturity ovate not exceeding 6-8 mm in diameter covered in 18 vertical rows of ivory-coloured scales; seed grooved and pitted. Seedling leaf with 4 leaflets.
    Vernacular
    rotan sabong
    Distribution
    Pahang near Mentakab and Pulau Tioman. Sumatra, Borneo, Java.

    Images

    Distribution

    Native to:

    Jawa, Malaya, Sumatera

    Calamus polystachys Becc. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Dransfield [4588], Malaysia 29047.339
    Beccari, O. [s.n.], Jawa K000687921 Unknown type material

    First published in Ann. Roy. Bot. Gard. (Calcutta) 11(1): 383 (1908)

    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