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

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

    [PW]
    General Description
    Solitary shortly climbing moderate rattan with stems to 5 m tall. Stem without sheaths 1.3 cm in diameter, with sheaths about 3 cm in diameter. Internodes about 20 cm long. Sheaths pale green with scattered pale brown spines to 4 cm long arranged in lateral groups of up to 7 (almost whorled) or solitary, and densely covered in caducous chocolate coloured scales; spines around leaf sheath mouth of two types, one type as the sheath spines but much longer, horizontally aligned and the second type papery, erect, deep purplish brown, to 30 cm long. No knee. Noflagellum Leaf ecirrate to 1.25 m long including petiole; petiole 40 cm armed with short lateral spines and densely covered with chocolate coloured scales. Leaflets about 35 on each side of the rachis, rather distant, ± divaricate, the lowermost longer than the rest, to 40 cm long by 2 cm wide, shortly brown bristly on 3 nerves on upper-side, minutely toothed along nerves below. Inflorescences male and female superficially similar, erect or arcuate, to 1.25 m long with 5 partial inflorescences peduncle to 30 cm ± unarmed. Bracts very large and conspicuous, tubular below, expanded and split to give a limb about 40 cm long by 5 cm wide, with few scattered triangular spines to 1 mm high and very dense chocolate-brown scales. Partial inflorescences very crowded, to 15 cm long with distichous rachillae; female to 7 cm long, the male to 1.5 cm. Flowers and fruit and seedling leaf unknown.
    Distribution
    Johore: endemic.

    Images

    Distribution

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

    Date Reference Identified As Barcode Type Status
    Dransfield, J. [JD 5062], Peninsular Malaysia K000207807 isotype

    First published in Malaysian Forester 41: 335 (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