1. Family: Arecaceae Bercht. & J.Presl
    1. Genus: Calamus L.
      1. Calamus ashtonii J.Dransf.

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

    [PW]
    General Description
    Solitary slender rattan, “stemless” or with a short erect stem to 50 cm, but rarely to 3 m or more; stem without sheaths to 10 mm diam., with sheaths to 30 mm diam., internodes very short, usually c. 10 mm. Sheath greenish-brown, ± unarmed or with sparse brown spines to 4 mm, except around the sheath mouth where densely armed with 2 rows of horizontal or erect brown spines to 5 cm long, the inner row generally longer and upward pointing; knee absent; ocrea absent. Flagellum absent. Leaf ecirrate, c. 85 cm long including the petiole to 20 cm; petiole armed with 2 rows of spines on each side as the leaf sheath, the spines decreasing in size towards the tip of the petiole; rachis with few reflexed spines; leaflets very regularly arranged, ± curved, the longest near the base c. 35 × 1.7 cm, both surfaces mid green, the lower surface also with 3 rows of short black bristles. Inflorescences elongate, very slender, tending to arch out of the crown, to 2 m long, whip-like; bracts closely sheathing, tubular, not very conspicuous, armed with reflexed grapnel spines; partial inflorescences c. 3, distant, very slender, bearing sparse slender rachillae to 80 × 1 mm; flowers small. Mature fruit rounded, small, c. 5 mm diam., strongly beaked and covered in 13 vertical rows of pale bright brown reflexed scales. Seed rounded; endosperm homogenous. Seedling not known. (Fig. 53).
    Distribution
    Known from a few collections from ridge tops in Temburong and Belait; elsewhere in Sarawak. Endemic to Borneo.

    Images

    Distribution

    Calamus ashtonii J.Dransf. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Aug 1, 1979 Jermy, C. [13895], Malaysia K000112936
    Oct 18, 1978 Moore, H.E. [9147], Malaysia K000112926
    Oct 12, 1978 Dransfield, J. [JD5267], Malaysia K000112933
    Ashton, P.S. [S.18384], Sarawak K000112931 holotype
    Dransfield, J. [6603], Brunei K000112932
    Dransfield, J. [JD6578], Brunei K000112934
    Dransfield, J. [JD6580], Brunei K000112937
    Mohtar [49718], Malaysia K000112938
    Stockdale, M.C. [MC55], Brunei K000112935

    First published in Bot. J. Linn. Soc. 81: 9 (1980)

    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