1. Family: Arecaceae Bercht. & J.Presl
    1. Genus: Calamus L.
      1. Calamus laxissimus Ridl.

        This species is accepted, and its native range is Peninsula Malaysia.

    [PW]
    Distribution
    Johore, Pahang, Kelantan.
    General Description
    Solitary shortly climbing rattan with stems to 3 m only. Stem without sheaths c 7 mm in diameter, with sheaths to 1.1 cm. Internodes to about 10 cm long. Sheaths mid green armed with scattered blackish spines of length varying from 2-15 mm and caducous pale brown indumentum; area of sheath at base of petiole usually unarmed; spines around leaf sheath mouth erect, brown, much longer than the other spines, to 5 cm long. Knee absent; some non-developing inflorescences appear as flagellum, but true hooked flagellum absent. Leaf ecirrate, to 2 m long with petiole to 40 cm; petiole sparsely armed with short reflexed spines. Leaflets to 25 on each side, distant, rigid, opposite above and divaricate; the longest to 35 cm long by 1.5 cm wide, dark green, unarmed on upper and lower surfaces, shortly bristly along margins. Inflorescences male and female superficially similar, to 75 cm very slender with peduncle to 40 cm, armed with grouped horizontal spines below. Bracts closely tubular except for a short triangular limb armed with crowded erect papery flat brown spines to 3 cm long by 2 mm wide. Partial inflorescences lax up to 15 cm long with few rachillae, the female to 7 cm long, the male somewhat curved very short fruit and seedling leaf unknown.

    Distribution

    Calamus laxissimus Ridl. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Saw Leng Guan [FRI44428], Malaysia K000208210

    First published in Mat. Fl. Malay. Penins. 2: 210 (1907)

    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.

    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