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  1. Family: Arecaceae Bercht. & J.Presl
    1. Genus: Areca L.
      1. Areca chaiana J.Dransf.

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

    [PW]
    General Description
    Erect, solitary undergrowth palm. Stem to 2-5 m tall, c. 1-8 cm diam., internodes c. 1.7-2 cm, bearing caducous chocolate brown scales; nodal scars to 4 mm wide. Crownshaft well-defined, light greenish yellow when fresh, drying mid-brown, 27 x 3 cm; leaf sheaths neatly abscising, c. 17 cm long, longitudinally striate, bearing sparse, minute, brown scales; ligule to 3 cm, soon tattering. Leaf pinnate, excluding sheath to 85 cm, including petiole to 15 x 0.3 cm; leaflets about 10 on each side of the rachis, ± close, mostly 1-4 ribbed except for the broader terminal pair which may be 4-8 ribbed, con- colorous, drying greenish brown, proximal leaflets c. 26 x 2.3 cm, mid-leaf leaflets c. 36 x 0.7-2.5 cm, apical pair c. 20 x 2.5-5.5 cm, all acuminate except for apical leaflets which are lobed; minute scales abundant on both surfaces. Inflorescences infrafoliar, simply spicate, to c. 15 cm, arcuate; prophyll winged, (only fragments available); peduncle short c. 20 x 7 mm diam. (at insertion of prophyll) greenish cream when fresh, drying dark, bearing scattered pale scales, proximal c. 1/3 of axis bearing numerous spirally arranged triads, distal portion bearing spirally arranged, solitary or paired staminate flowers, subtended by relatively conspicuous triangular rachilla bracts c. 1 x 1 mm. Staminate flower rather irregularly flattened due to close packing; calyx base stipitate, c. 1 x 0.5 mm, flattened, glabrous; calyx lobes narrow-triangular, c. 2 x 0.5 mm, keeled, the margins minutely ciliate; petals variable, striate c. 9 x 2-3.5 mm; stamens 6, ± epipetalous, filaments c. 2 x 0.2 mm, anthers medifixed, ± divergent at tip and base, c. 5.5 x 0.5 mm, latrorse; pistillode absent. Pistillate flower sessile; sepals 3, ovate, imbricate, cucullate, minutely scaly, striate, c. 8 x 4 mm; petals 3, ovate, imbricate except at the very tip, minutely ciliate at margins, c. 7 X 3 mm; staminodes ?6, minute; ovary ± fusiform, c. 6 x 1.2 mm. Mature fruit ± fusiform and somewhat curved at the tip, c. 30 x 8 mm, with apical stigmatic residue c. 2 mm diam.; pericarp drying dull brown, longitudinally striate; seed basally attached filling a space c. 20 x 6 mm, shrinking to 12 x 5 mm.
    Biology
    Near river bank on slope in open place. Altitude 2000 ft a.s.l.
    Diagnostic
    montana ad sectionem Microarecam ut videtur pertinens sed inflorescentia spicata basi triades numerosos con- gestosque ferenti, floribus staminatis complanatis petalis latis statim dis- tinguibilis.
    Distribution
    Borneo, Sarawak, 2nd Division, known only from the type

    Images

    Distribution

    Other Data

    Areca chaiana J.Dransf. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Chai, P. [S.33986], Malaysia K000208007 holotype

    Bibliography

    First published in Kew Bull. 39: 10 (1984)

    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. (1995). World Checklist of Seed Plants 1(1, 2): 1-483, 1-529. MIM, Deurne.

    Literature

    Palmweb - Palms of the World Online

    • J. Dransfield, The genus Areca (Palmae: Arecoideae) in Borneo. 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.
    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 2020. 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 2020. 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