1. Family: Arecaceae Bercht. & J.Presl
    1. Genus: Calamus L.
      1. Calamus tumidus Furtado

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

    [PW]
    Distribution
    Trengganu, Pahang, Johore, Negri Sembilan. Sumatra.
    Vernacular
    rotan manau tikus
    General Description
    Solitary high climbing rattan with stems ultimately to 60 m or more in length, without sheaths about 1.2 cm near the base, and about 2.5 cm in the upper part of the mature plant, with sheaths to about 4.5 cm in diameter; upper internodes about 12 cm in length, lower internodes to 30 cm. Sheaths, when newly emerged rich reddish-brown quickly turning yellowish-green, bearing similarly coloured robust bulbous-based spines to 4 cm long by 7 mm wide, the spines scattered or only slightly grouped, with flocculent white waxy indumentum in conspicuous horizontal lines between the spines and on the upper and lower sides of the spine base. Ocrea short, rather inconspicuous. Knee immensely swollen, in the field visible from some distance. Leaf robust, cirrate, to about 4 m in length including the cirrus 1.5 m in length. Petiole about 30 cm in length semi-circular in T.S. armed along the two edges with large spines and indumentum as on the sheath, lower and upper petiole surfaces unarmed and without indumentum; petiole reddish-brown to crimson when newly emerged, quickly turning dull yellowish green. Leaflets about 25 on each side of the rachis grouped into pairs, pale yellowish green to glaucous, conspicuously white waxy on the lower surface when young, to about 40 cm long by 6 cm wide, black bristly along margins. Inflorescences, male and female superficially similar, to about 1 m long with spiny bracts and up to 8 partial inflorescences on each side of the rachis; rachillae about 15 cm long; mature fruit about 2.2 cm long by 1.8 cm long, somewhat oblong, shortly beaked, covered in 15 vertical rows of convex yellowish brown scales. Seed about 1.6 cm long by 1.2 cm wide by 1 cm thick, flattened, covered in yellowish green sarcotesta, irregularly pitted and deeply ruminate. Seedling leaf bifid.
    [PW]
    Use
    Excellent cane, the larger diameter specimens of which are included with rotan manau (Calamus manan). Smaller diameter specimens are still of excellent quality and are probably absorbed into the market with other smaller diameter canes.

    Images

    Distribution

    Native to:

    Malaya, Sumatera

    Calamus tumidus Furtado appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Baker, W.J. [1006] K000114523

    First published in Gard. Bull. Singapore 15: 105 (1956)

    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