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

        This species is accepted, and its native range is N. Borneo to Philippines.

    [PW]
    Distribution
    So far, in Sabah, known only from the ultrabasic rocks of Bt. Silam, Lahad Datu; elsewhere known only from Palawan and Luzon.
    General Description
    Slender solitary rattan climbing to c 10 m; stem without sheaths 5-10 mm, with sheaths to 20 mm; internodes to 16 cm. Sheaths dull green armed with abundant ± evenly spaced rigid brown spines to 25 mm with conspicuous swollen bases, and scattered brown scales, the spines usually ± horizontal or somewhat upward pointing. Knee conspicuous armed as the sheath. Ocrea short to 5 mm, membranous, occasionally armed with short spines. Leaf cirrate, to 1.5 m, including the short petiole to 5 cm, and cirrus to 40 cm; rachis armed with fierce black, yellowish-based reflexed spines; leaflets to c 35 on each side of the rachis, irregularly arranged in groups of 2-4, and fanned within the groups, extremely slender and limp, toe 30x0.5cm, dark shiny green throughout except for very base where pale yellowish-brown, unarmed, the main vein very prominent, lateral veinlets conspicuous but very short. Male and female inflorescences superficially similar, to c 1m, usually rather inconspicuous amongst the plumose leaves, with about 8 partial inflorescences, the male with very crowded branches, the rachillae to 2 cm, the female with rather lax branches bearing rachillae to 12 cm with rather distant flowers. Almost mature fruit very small, green, spherical to c 6 mm diam., with very short beak and covered in c 18 vertical rows of pale green to pale brown scales with mid brown tips. Seed spherical to 4 mm diam.; endosperm homogeneous. Seedling leaf unknown.

    Distribution

    Native to:

    Borneo, Philippines

    Calamus microsphaerion Becc. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    May 30, 1980 Dransfield, J. [JD5831], Malaysia K000521271
    May 30, 1980 Dransfield, J. [JD5832], Malaysia K000113840
    May 30, 1980 Dransfield, J. [JD5846], Malaysia K000113841
    May 20, 1980 Dransfield, J. [JD5833], Malaysia K000521270
    Faraon [894], Philippines K000462811

    First published in G.H.Perkins & al., Fragm. Fl. Philipp. 1: 45 (1904)

    Accepted by

    • Baja-Lapis, A.C. (2010). A Field Guide to Philippine Rattans: 1-214. Asia Life Sciences, Laguna, Philippines.
    • 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 Sabah. Sabah Forest Records 13.. 1984

    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.

    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