1. Family: Arecaceae Bercht. & J.Presl
    1. Genus: Roystonea O.F.Cook
      1. Roystonea violacea León

        This species is accepted, and its native range is E. Cuba (Maisí Reg.).

    [PW]
    General Description
    Trunk mauve-brown to mauve-gray, to 15 m tall, ca. 34 cm diam. Leaves ca. 15, lowest leaves hanging well below the horizontal; crownshaft ca. 2 m long; petiole ca. 80 cm long; rachis 3.2-3.6 m long; middle segments 95-104 cm long and 3.7-4 cm wide. Inflorescence ca. 1.3 m long and 1 m wide; prophyll 40-42 cm long and 12-13 cm wide, peduncular bract ca. 1.2 m long. widest above middle, apex acuminate; rachillae 17- 20 cm long and 1.4-2 mm diam. Staminate flowers violet, darker toward the base of the petals and filaments; sepals triangular, ca. 0.9 mm long and 1.2 mm wide; petals ovate, ca. 5.1 mm long and 2.9 mm wide; stamens 6, ca. 5.8 mm long; filaments awl-shaped, ca. 3.7 mm long; anthers ca. 3.7 mm long, purple; pistillode minute. Pistillate flowers violet, 2-2.5 per cm; sepals reniform, ca. 1.2 mm long and 3.3 mm wide; petals ovate, coriaceous, ca. 3 mm long; staminode shallowly 6-lobed, ca. 2.3 mm long, free for ca. 1.2 mm; gynoecium ca. 2.4 mm long and 2.5 mm diam. Fruits spheroid to ellipsoid, 12-13.7 mm long, 8.1-9 mm dorsiventral thickness, and 7.8-8.5 mm wide; epicarp brown to black, stigmatic scar plain; endocarp ellipsoid, fragile, 7.8-8.5 mm long, 5.9-6.6 mm dorsiventral thickness, and 6.2-6.5 mm wide; seed dorsiventrally compressed ellipsoid, 5.8-9.3 mm long, 4.3-5.3 mm dorsiventral thickness, and 5.3-6 mm wide; raphe circular. Eophyll linearlanceolate. exstipitate, weakly costatc.
    Distribution
    Restricted to the Maisf region of the province of Guantánamo, Cuba, at 350-420 m altitude.
    Vernacular
    Palma criolla azul, palma morada, palma roja.
    [PW]
    Use
    Like all Cuban Roystonea, this species is used for timber, thatch, and hog feed.

    Distribution

    Roystonea violacea León appears in other Kew resources:

    First published in Mem. Soc. Cub. Hist. Nat. ''Felipe Poey'' 17: 10 (1943)

    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