1. Family: Arecaceae Bercht. & J.Presl
    1. Genus: Oncocalamus (G.Mann & H.Wendl.) H.Wendl.
      1. Oncocalamus wrightianus Hutch.

        This species is accepted, and its native range is S. Benin to SW. Nigeria.

    [PW]
    Diagnostic
    Affini, O. wrightii Wendl., sed foliolis paucioribus et vaginis foliorum aculealis differt.
    Conservation
    Vulnerable (VU) due to its restricted range and habitat loss.
    General Description
    Clustered (?) slender palm climbing to 10 m. Stems without sheaths 6-10 mm in diameter, with 8-15 mm; internodes ±15 cm long. Leaf sheaths striate, moderately to sparsely armed with caducous black spines, particularly concentrated and persistent on ocrea, often sloughing off to leave raised, triangular, blister-like scars, sheath sometimes becoming bare at base; white caducous indumentum present on mature sheaths, profuse on young sheaths; ocrea horizontally truncate, without conspicuous lobe, extending to ±3 cm. Leaves sessile, or with a very short (<2 cm) petiole; rachis up to 60 cm long, unarmed; cirrus 35-45 cm long, unarmed; acanthophylls, 1.0-1.8 cm long. Leaflets composed of 2-4 folds, broadly lanceolate, ovate or sigmoid, 7-15 on each side of the rachis, 10-15 cm long, 2.5-5.0 cm broad at the widest point, with 2 or more prominent veins, leaflets margins sparsely armed with rather fine spines. Flower and fruit unknown.
    Distribution
    Oncocalamus wrightianus is known only from southern Benin and Nigeria, extending eastwards to the Niger Delta.
    Biology
    This species is recorded as occurring in swamp forest only (Dalziel 1937).

    Images

    Distribution

    Native to:

    Benin, Nigeria

    Oncocalamus wrightianus Hutch. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jones [17419], Nigeria K000520004
    Jones [17419], Nigeria K000520005
    Jones [17419], Nigeria K000520006
    Gartlan, J.S. [39], Cameroon 6049.038
    Barter [2220], Nigeria K000462830 Unknown type material

    First published in Kew Bull. 17: 181 (1963)

    Accepted by

    • Sunderland, T.C.H. (2012). A taxonomic revision of the rattans of Africa (Arecaceae: Calamoideae) Phytotaxa 51: 1-76.
    • Akoègninou, A., van der Burg, W.J. & van der Maesen, L.J.G. (eds.) (2006). Flore Analytique du Bénin: 1-1034. Backhuys Publishers.
    • Govaerts, R. & Dransfield, J. (2005). World Checklist of Palms: 1-223. The Board of Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Palmweb - Palms of the World Online
    • T.C.H Sunderland, A taxonomic revision of the rattans of Africa (Arecaceae: Calamoideae) in Phytotaxa 51. 2012
    • J. Hutchinson, Tropical African Plants: XXVII. 1963
    Kew Backbone Distributions
    • Akoègninou, A., van der Burg, W.J. & van der Maesen, L.J.G. (eds.) (2006). Flore Analytique du Bénin: 1-1034. Backhuys Publishers.

    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