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

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

    [PW]
    General Description
    Clustering rattan climbing to c. 6 m only, often much less; stem without sheaths c. 15 mm diam., with to c. 30 mm diam., internodes c. 10 cm long. Sheath bright green, armed with partial or rarely complete whorls of slender, flattened or horse-hair-like, reflexed black spines, 5-40 mm long, borne on low collars, spines around sheath mouth mostly erect, to 70 mm long, pale brown hairs abundant between the spines; knee inconspicuous, armed as the sheath. Leaf cirrate, to 2.5 m including the cirrus to 1 m and petiole to 35 cm; petiole armed laterally with rather distant long spines to 25 mm, and very much smaller spines on the upper surface; leaflets 25-30 on each side of the rachis, stiffly held, arranged in distant groups of 3-7, arranged regularly within the groups in one plane, narrow, linear, acuminate, the longest to c. 42 × 2 cm, bristly on 3-5 nerves on the lower surface, transverse veinlets crowded, easily visible. Inflorescences much shorter than the leaves, rarely more than 70 cm long; peduncle c. 10 cm long, in the female elongating in fruit; prophyll and other primary bracts chestnut brown, papery, covered in pale brown indumentum and sometimes also bearing fine bristles or spines, the bracts soon falling or becoming tattered; partial inflorescences up to c. 9; secondary bracts rather conspicuous, becoming tattered; male rachillae crowded, to 2 cm long, bearing strictly distichous crowded flowers; female rachillae up to 7 cm long. Mature fruit rounded, c. 20 mm diam., beaked and covered in 15-17 vertical rows of matt blackish-brown scales. Seed spherical with sweet sarcotesta; endosperm ruminate, embryo basal. Seedling not known. (Fig. 19).
    Distribution
    Known from a single collection from Ulu Tutong. Elsewhere in Sarawak and S and E Kalimantan. Endemic to Borneo.

    Images

    Distribution

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

    Date Reference Identified As Barcode Type Status
    Apr 14, 2005 Watanabe, N.M. [NMW21], Indonesia Daemonorops atra K000209409
    Apr 14, 2005 Watanabe, N.M. [NMW75], Indonesia Daemonorops atra K000209410
    Sep 14, 2000 Mogea, J.P. [7417], Indonesia Daemonorops atra K000114251
    May 26, 1994 Van Valkenburg [1039], Indonesia Daemonorops atra K000520295
    May 9, 1994 Ambriansyah [AA614], Indonesia Daemonorops atra K000520307
    Dec 22, 1993 Van Valkenburg [1137], Indonesia Daemonorops atra K000520305
    Oct 9, 1992 Yii, P.C. [S52299], Malaysia Daemonorops atra K000520310
    Jan 23, 1992 Van Valkenburg [1123], Indonesia Daemonorops atra K000520306
    Jan 1, 1992 Clemens, J. [21370], Malaysia Daemonorops atra K000520309
    Dec 17, 1984 Mogea, J.P. [4111], Indonesia Daemonorops atra K000520296
    Dec 6, 1984 Mogea, J.P. [3772], Indonesia Daemonorops atra K000520294
    Aug 31, 1982 Ashton, P. [S17602], Malaysia Daemonorops atra K000520299
    Oct 3, 1978 Dransfield, J. [JD5284], Malaysia Daemonorops atra K000520303
    Oct 3, 1978 Dransfield, J. [JD5285], Malaysia Daemonorops atra K000520301
    Oct 3, 1978 Lee [S38890], Malaysia Daemonorops atra K000520302
    Oct 3, 1978 Chai [S37290], Malaysia Daemonorops atra K000520298
    Oct 2, 1978 Dransfield, J. [JD2309], Indonesia Daemonorops atra K000520300
    Oct 2, 1978 Chai [S37255], Malaysia Daemonorops atra K000520297
    Aug 13, 1974 Dransfield, J. [JD4423], Indonesia Daemonorops atra K000520304
    Johns, R.J. [7578], Brunei Daemonorops atra K000520293
    Dransfield, J. [JD4394], Indonesia Daemonorops atra K000207652 holotype
    Ambriansyah [AA746], Indonesia Daemonorops atra K000520308

    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.
    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