1. Family: Arecaceae Bercht. & J.Presl
    1. Genus: Calamus L.
      1. Calamus balingensis Furtado

        This species is accepted, and its native range is Peninsula Thailand to Malaya.

    [PW]
    General Description
    Solitary rattan with stem to 12 m tall, without sheaths about 1 cm in diameter, with sheaths to about 2 cm, with internodes about 10 cm in length. Sheaths rather densely armed with dark brown spines of varying length, reflexed or horizontal the longest to 5 cm long by 5 mm wide; spines around leaf sheath mouth erect, very large, to 10 cm long. Knee prominent. Ocrea inconspicuous. Flagellum to about ? 2 m long. Leaf ecirrate to 2 m long with petiole to 25 cm long, petiole and rachis densely furfuraceous and armed with scattered lateral spines. Leaflets about 50 on each side of the rachis, regular and close the largest to 28 cm by 1.6 wide; the upper surface with scattered bristles on 3 nerves, the lower surface very densely armed with minute bristles. Inflorescence, only male known; to about 2 m long with about 6 partial inflorescences, the longest to 20 cm with all bracts rather densely armed except for those subtending rachillae. Fruit unknown. Seedling unknown.
    Distribution
    Kedah: endemic. Only known from the type.
    Vernacular
    rotan tanah (c.f.Furtado 1956)
    [PW]
    Vernacular
    rotan kerai (incorrectly rotan getah)
    General Description
    Slender ? clustering rattan. Stem without sheaths about 7 mm in diameter, with sheaths to 1.1 cm; internodes 8.5 cm long. Sheaths, in dried specimen, dull straw-coloured with scattered dark indumentum and various spines, usually reflexed, scattered, rather sparse, 1-10 mm long. Knee conspicuous with short 2 mm long spines along keel; petiole base unarmed on abaxial face; spines around leaf sheath mouth conspicuous, upward pointing. Ocrea inconspicuous. Flagellum about 60 cm. Leaf to 85 cm long, ecirrate; petiole to 11 cm long, armed with short spines to 2 mm long spaced evenly along the margins; leaflets about 60 on each side of the rachis, narrow, regular, close, the largest to 13 cm long by 1 cm wide; leaflets bristly on 3 nerves above and along margins, and very densely bristly along 5 nerves below. Inflorescence, only female known, to 105 cm long with a long terminal flagellum and three partial inflorescences to about 7 cm long; immature fruit somewhat wider than high, about 5 mm high, 4 mm wide covered in 21 vertical rows of reflexed brownish scales.
    Distribution
    Perak: known from two collections only. Endemic.

    Images

    Distribution

    Native to:

    Malaya, Thailand

    Calamus balingensis Furtado appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    May 8, 1942 Furtado, C.X. [33073], Peninsular Malaysia K000207718 holotype
    Furtado, C.X. [33073], Peninsular Malaysia K000207717 holotype
    Furtado, C.X. [33073], Peninsular Malaysia K000207716 holotype

    First published in Gard. Bull. Singapore 15: 240 (1956)

    Accepted by

    • Barfod, A.S. & Dransfield, J. (2013). Flora of Thailand 11(3): 323-498. The Forest Herbarium, National Park, Wildlife and Plant Conservation Department, Bangkok.
    • Henderson, A. (2009). Palms of Southern Asia: 1-197. Princeton university press, Princeton and Oxford.
    • 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, A Manual of the rattans of the Malay Peninsula. Malayan Forest Recirds 29.. 1979
    Kew Backbone Distributions
    • Barfod, A.S. & Dransfield, J. (2013). Flora of Thailand 11(3): 323-498. The Forest Herbarium, National Park, Wildlife and Plant Conservation Department, Bangkok.

    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