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

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

    [PW]
    Distribution
    Known from two collections in Brunei. Elsewhere in Sarawak. Endemic to Borneo.
    General Description
    Slender to moderate solitary rattan with stems rarely longer than 5 m, usually only 2 m; stem without sheaths to c. 11 mm diam., with sheaths to 20 mm diam., internodes c. 8 cm long, sometimes much less. Sheaths bright green when fresh, bearing scattered, straight black spines to 15 mm with yellowish bases and abundant deciduous scales; knee conspicuous, the sheath pale creamcoloured above the knee; ocrea absent. Rosette leaves ecirrate, to c. 1.5 m long, long-persisting, with 8-10 regularly arranged leaflets on each side of the rachis, petiole and rachis conspicuously yellow blotched. Leaves on climbing stems cirrate, to 2 m, but usually c. 75 cm, petiole very short, 2-5 cm only, cirrus to 75 cm; rachis sparsely armed, bright green, conspicuously blotched with yellow; leaflets 8-10 on each side, regularly arranged, broad, hooded and abruptly narrowed at the tip, very thick in texture, the largest to c. 25 × 6 cm, the basalmost 1-2 pairs very much smaller and narrower; transverse veinlets conspicuous. Inflorescences short, rarely more than 20 cm, rather congested; peduncle very spiny; prophyll c. 14 × 4 cm, ± woody; partial inflorescences c. 5; male rachilla c. 15 × 1.5 mm, female c. 25 × 3 mm, both densely covered in brown hairs. Mature fruit rounded, c. 20 × 16 mm, somewhat beaked, covered in 15 vertical rows of brown scales very heavily encrusted in dragon’s blood. Seed c. 14 × 10 mm; endosperm deeply ruminate. Seedling leaf not known. (Fig. 12, Pl. 4C).
    [PW]
    Use
    Not known with certainty but this must be one of the richest producers of dragon’s blood.

    Images

    Distribution

    Calamus maculatus (J.Dransf.) W.J.Baker appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Apr 14, 2005 Watanabe, N.M. [NMW11], Indonesia Daemonorops maculata K000209385
    Apr 19, 2002 Chai, P. [39622], Malaysia Daemonorops maculata K000030643
    Dec 7, 1990 Jawa [S36626], Malaysia Daemonorops maculata K000520694
    Feb 28, 1989 Dransfield, J. [6557], Brunei Daemonorops maculata K000520698
    Aug 20, 1987 Mokhtar [S44835], Malaysia Daemonorops maculata K000520701
    Aug 12, 1982 Dransfield, J. [JD5928], Malaysia Daemonorops maculata K000520697
    Aug 12, 1982 Dransfield, J. [JD6071], Malaysia Daemonorops maculata K000520700
    Aug 12, 1982 Dransfield, J. [JD6131], Malaysia Daemonorops maculata K000520695
    Aug 12, 1982 Chai [S19460], Malaysia Daemonorops maculata K000520690
    Aug 12, 1982 Chai [S17838], Malaysia Daemonorops maculata K000520696
    Aug 12, 1982 Chai [S39622], Malaysia Daemonorops maculata K000520702
    Aug 12, 1982 Chai [S19460], Malaysia Daemonorops maculata K000520691
    Aug 12, 1982 Chai [S19460], Malaysia Daemonorops maculata K000520692
    Aug 12, 1982 Chai [S19460], Malaysia Daemonorops maculata K000520693
    Coode, M. [6987], Brunei Daemonorops maculata K000520699
    Dransfield, J. [JD5927], Sarawak Daemonorops maculata K000207677 holotype

    First published in Phytotaxa 197(2): 146 (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.
    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