1. Family: Arecaceae Bercht. & J.Presl
    1. Genus: Calamus L.
      1. Calamus ridleyanus Becc.

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

    [PW]
    Vernacular
    rotan kerai
    Distribution
    Trengganu, Johore, Singapore. Endemic.
    General Description
    Clustering high climbing moderate rattan with stems reaching 30 m tall. Stem without sheaths about 1 cm in diameter, with sheaths to 2.5 cm; internodes to about 20 cm long. Sheaths dull green, rather densely armed with slightly upward pointing hairy margined pale based brown spines of various lengths, the longest to about 2.2 cm long by 5 mm wide, with only slightly swollen bases, and sparse dirty brown indumentum. Ocrea brown, tattering. Knee prominent. Flagellum to 2 m long. Leaf subcirrate to about 1.3 m with petiole to 10 cm, armed with conspicuous black lateral spines to 4 mm. Leaflets regular, about 40 on each side the longest to about 40 cm long by 2.5 cm wide, bristly along mid-vein below, no bristles on upper surface; leaflets decreasing to minute vestiges to 1 cm long at the subcirrate leaf tip. Inflorescences to about 2 m long with 3 partial inflorescences, the female much more robust than the male with all bracts except those of the rachillae, armed with small thorns; partial inflorescences to 40 cm long; female rachillae about 8 cm long distinctly recurved. Ripe fruit unknown; immature very conspicuously beaked, covered in 28 vertical rows of dull brown scales. Seedling leaf unknown.
    [PW]
    Use
    Not known but probably used mixed with Calamus densiflorus as rotan kerai.

    Images

    Distribution

    Calamus ridleyanus Becc. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Ridley, H.N. [6901], Peninsular Malaysia K000208114 syntype
    Ridley, H.N. [6901], Peninsular Malaysia K000208115 syntype

    First published in Rec. Bot. Surv. India 2: 205 (1902)

    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, A Manual of the rattans of the Malay Peninsula. Malayan Forest Recirds 29.. 1979

    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