1. Family: Arecaceae Bercht. & J.Presl
    1. Genus: Roystonea O.F.Cook
      1. Roystonea princeps (Becc.) Burret

        This species is accepted, and its native range is SW. Jamaica.

    [PW]
    Vernacular
    Morass cabbage palm, Morass royal palm.
    Distribution
    This species is locally abundant in the Great Morass region of western Jamaica, in the vicinities of Black River and Negril.
    General Description
    Trunk gray-white, to 20 m tall, 27.5-42 cm diam. Leaves ca. 15, lowest leaves hanging below the horizontal; crownshaft ca. 1.8 m long; rachis ca. 4 m long; middle segments 75-78.5 cm long and 4.3- 5.9 cm wide. Inflorescence ca. 1.3 m long and 1 m wide, appearing diffuse and open; prophyll not seen; peduncular bract ca. 1.8 m long and 21 cm wide, widest at the middle, apex caudate; rachillae 29-34.5 cm long and 1.1-2 mm diam., lax. Staminate flowers white; sepals triangular, ca. 0.4 mm long and 0.7 mm wide; petals elliptical to linear, ca. 3.4 mm long and 1.8 mm wide; stamens 6, ca. 3.1 mm long; filaments awl-shaped, ca. 2.4 mm long; anthers ca. 2 mm long, purplish; pistillode minute. Pistillate flowers white, 2-3.5 per cm; sepals reniform, 0.8-1 mm long and 2.5-3.1 mm wide; petals ovate, 2.5-2.9 mm long; staminode 6-lobed, 1.7-2.2 mm long, free for 0.6-0.7 mm; gynoecium 1.7-2.6 mm long and 1.7-2.1 mm diam. Fruits ellipsoid to obovoid, gibbous, 12.2-16.7 mm long, 8.7-11.7 mm dorsi ventral thickness, and 8.4-10.4 mm wide; epicarp purplish black, stigmatic scar plain; endocarp ellipsoid, 10.4-13.5 mm long, 6.8-1l.1 mm dorsiventral thickness, and 6.2-7.6 mm wide; seed ellipsoid, 9.7-11.5 mm long, 5.5-6.7 mm dorsiventral thickness, and 5.7-6.7 mm wide; raphe circular. Eophyll lanceolate, 15-19 cm long and 2- 2.7 cm wide, stipitate, short costate. n = 18 (Read, 1966).

    Distribution

    Native to:

    Jamaica

    Roystonea princeps (Becc.) Burret appears in other Kew resources:

    First published in Bot. Jahrb. Syst. 63: 76 (1929)

    Accepted by

    • Acevedo-Rodríguez, P. & Strong, M.T. (2005). Monocotyledons and Gymnosperms of Puerto Rico and the Virgin Islands Contributions from the United States National Herbarium 52: 1-415.
    • 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
    • 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