1. Family: Arecaceae Bercht. & J.Presl
    1. Genus: Calamus L.
      1. Calamus asteracanthus (Becc.) W.J.Baker

        This species is accepted, and its native range is Borneo.

    [PW]
    Distribution
    In Brunei known only from G. Pagon and Bt. Retak. Elsewhere in Sarawak (G. Mulu) and Kalimantan (type collection). Endemic to Borneo.
    General Description
    Slender clustering rattan climbing to 10 m tall; stem without sheaths c. 7 mm diam., with sheaths to 15 mm diam., internodes 6-10 cm long. Sheath dull green, armed with very slender black spines and broad, flatter spines to 12 mm, arranged in whorls or partial whorls, sometimes conspicuously radiating, dull brown indumentum abundant between the spines, spines around the sheath mouth rather large, erect; knee present, armed as the sheath. Leaf cirrate, to 1 m including the petiole to 25 cm and cirrus to 45 cm long; petiole armed laterally with rather regular spines 5-7 mm long; leaflets 10-12 on each side of the rachis, arranged in rather distant pairs, within the pairs the leaflets inserted close together and diverging, the longest to 20 × 1.7 cm, in exposed plants much smaller, lower leaflet surface bearing abundant minute brown scales, transverse veinlets conspicuous. Inflorescences erect or ± pendulous, shorter than the leaves, 20-30 cm long, with up to 5 partial inflorescences; peduncle 5-10 cm long; prophyll and primary bracts thin, dull brown, covered in brown indumentum, soon falling; male rachillae not known; female rachillae rather crowded, to 35 mm long, bearing conspicuously stalked flowers. Mature fruit broadly ellipsoid, c. 10 × 7 mm, beaked, covered in 12 vertical rows of pale brown scales with darker margins. Seed ellipsoid, 8 × 5 mm, deeply pitted; endosperm deeply ruminate. Seedling not known. (Fig. 21).

    Distribution

    Calamus asteracanthus (Becc.) W.J.Baker appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Apr 4, 1996 Ching, Y.P. [S55913], Malaysia Daemonorops asteracantha K000520287
    Mar 1, 1989 Awa [S51121], Malaysia Daemonorops asteracantha K000520286
    Jan 19, 1979 Dransfield, J. [JD5351], Malaysia Daemonorops asteracantha K000520288
    Ashton, P. [251], Brunei Daemonorops asteracantha K000520291
    Ashton, P. [259], Brunei Daemonorops asteracantha K000520284
    Johns, R.J. [6521], Brunei Daemonorops asteracantha K000520289
    Wong, K.M. [WKM 449], Brunei Daemonorops asteracantha 63008.000
    Wong, K.M. [1762], Brunei Daemonorops asteracantha K000520283
    Wong, K.M. [449], Brunei Daemonorops asteracantha K000520285
    Wong, K.M. [791], Brunei Daemonorops asteracantha K000520290

    First published in Phytotaxa 197(2): 141 (2015)

    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