1. Family: Arecaceae Bercht. & J.Presl
    1. Genus: Roystonea O.F.Cook
      1. Roystonea dunlapiana P.H.Allen

        This species is accepted, and its native range is SE. Mexico to Central America.

    [PW]
    Distribution
    Scattered in estuaries and coastal swamps from Mexico to Honduras and Nicaragua. It likely occurs in Belize, but no collections from that country have been seen.
    General Description
    Trunk gray-white, to 20 m tall, ca. 38 cm diam. Leaves ca. 15, lowest leaves hanging below the horizontal; crownshaft ca. 2 m long; rachis ca. 4 m long, middle segments 78-88 cm long and 2.5-6.5 cm wide. Inflorescence ca. 1 m long and 1 m wide; pro-phyll not seen; peduncular bract ca. 2 m long, narrowly acuminate, as long as the crownshaft, widest in the middle; rachillae ca. 37 cm long and 1-1.3 mm diam., stiff. Staminate flowers white; sepals triangular, ca. 1 mm long and 0.8-1.8 mm wide; petals elliptical to ovate, 2.9-5.6 mm long and 2.1-2.4 mm wide; stamens 6, ca. 3.5 mm long; filaments awl-shaped, 2.4-4.8 mm long; anthers 1.8-2.7 mm long, purplish; pistillode minute. Pistillate flowers 1.5-3.5 per cm, not seen. Fruits obovoid and gibbous, 12-14.7 mm long, 7.5-9.8 mm dorsiventral thickness, and 7.1-9.5 mm wide; epicarp purplish black stigmatic scar plain; endocarp ellipsoid, 11-13.6 mm long, 6.5-8.2 mm dorsiventral thickness, and 6.5-7.4 mm wide; seed ellipsoid, 7.3-10.3 mm long, 4.5-5.8 mm dorsiventral thickness, and 5.1-6 mm wide; raphe circular. Eophyll linear-lanceolate, exstipitate, weakly costate.
    [PW]
    Use
    Leaves and leaf sheaths are used for thatching.

    Distribution

    Native to:

    Honduras, Mexico Southeast, Nicaragua

    Roystonea dunlapiana P.H.Allen appears in other Kew resources:

    First published in Ceiba 3: 15 (1952)

    Accepted by

    • Nelson Sutherland, C.H. (2008). Catálogo de las plantes vasculares de Honduras. Espermatofitas: 1-1576. SERNA/Guaymuras, Tegucigalpa, Honduras.
    • Govaerts, R. & Dransfield, J. (2005). World Checklist of Palms: 1-223. The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Stevens, W.D., Ulloa U., C., Pool, A. & Montiel, O.M. (2001). Flora de Nicaragua Monographs in Systematic Botany from the Missouri Botanical Garden 85: i-xlii, 1-2666.

    Literature

    Palmweb - Palms of the World Online
    • Zona, S. 1996. Roystonea.(Arecaceae: Arecoideae). Flora Neotropica Monograph 71, 1-35.

    Sources

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2018. 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 2018. 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