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

        This species is accepted, and its native range is Borneo (Sarawak).

    [PW]
    General Description
    Solitary or clustering rattan climbing to 25 m; stem without sheaths to 15 mm diam., with sheaths to 25 mm diam., internodes 15-25 cm long. Sheaths dark green armed with triangular spines with swollen decurrent bases and very low ridges, indumentum abundant between the spines, sheath drying dull blackish-brown beneath the indumentum; knee conspicuous; ocrea membranous, soon tattering. Flagellum to 2.5 m. Leaf ecirrate, conspicuously curved, to 80 cm; petiole to 15 cm in juveniles, very short or absent at maturity; leaflets to c. 20 on each side of the rachis, regularly arranged, lanceolate, rather distant, the basalmost held across the stem, the longest to 35 × 4 cm; apical pair joined for c. 1/4 their length, leaflets drying dull green, transverse veinlets obscure. Inflorescences c. 2 m long with up to 5 partial inflorescences; partial inflorescences rather diffuse; bracts subtending rachillae minutely roughened; male rachillae 20-50 × 1.5 mm bearing strictly distichous flowers; female rachillae 30-80 × 3 mm bearing strictly distichous flowers. Young fruit rounded, covered in 16 vertical rows of dull brown scales. Seedling leaf not known.
    Distribution
    Known from a single collection. Elsewhere in Sarawak. Endemic to Borneo.
    [PW]
    Use
    The cane appears to be of good quality.

    Images

    Distribution

    Calamus ruvidus Becc. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Feb 1, 1989 Kandau [S43764], Malaysia K000521307
    Feb 23, 1983 Dransfield, J. [JD5942], Malaysia K000521306
    Feb 23, 1983 Dransfield, J. [JD5958], Malaysia K000521308
    Hewitt [13205], Malaysia K000521305
    Lobb, T. [s.n.], Sarawak K000207852 holotype
    Lobb, T. [s.n.], Sarawak K000207853 holotype

    First published in Rec. Bot. Surv. India 2: 202 (1902)

    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, The Rattans of Brunei Darussalam. 1997

    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