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  1. Family: Poaceae Barnhart
    1. Genus: Arthrostylidium Rupr.
      1. Arthrostylidium ekmanii Hitchc.

        This species is accepted, and its native range is Cuba to Hispaniola.

    [GB]
    Habit
    Perennial; caespitose. Rhizomes short; pachymorph. Culms scandent; slender; drooping at the tip; 2 mm diam.; woody. Culm-internodes terete; thick-walled; 25 cm long; retrorsely scabrous; distally glabrous. Lateral branches fastigiate. Branch complement many; in a clump; subtended by a bare patch above the node; with subequal branches. Leaf-sheaths striately veined; glabrous on surface. Leaf-sheath oral hairs setose; 5-7 mm long. Ligule an eciliate membrane. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.1 cm long. Leaf-blades deciduous at the ligule; lanceolate; 3-6 cm long; 4-8 mm wide. Leaf-blade surface glabrous. Leaf-blade apex hairy.
    Inflorescences
    Inflorescence composed of racemes; terminal and axillary. Racemes 1; single; straight; bilateral; 0-5 cm long; bearing 1-3 fertile spikelets on each. Spikelet packing lax. Spikelets solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 4-5 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 30-50 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes zig-zag; eventually visible between lemmas; glabrous.
    Fertile
    Spikelets comprising 1 basal sterile florets; 4-5 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 30-50 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes zig-zag; eventually visible between lemmas; glabrous.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume ovate; 3-7 mm long; chartaceous; without keels. Lower glume apex acute. Upper glume lanceolate; 4-8 mm long. Upper glume apex acute.
    Florets
    Basal sterile florets barren; persisting on inflorescence. Lemma of lower sterile floret similar to fertile lemma; 5-9 mm long. Fertile lemma lanceolate, or ovate; widest at 0.33 of its length from base; 9-12 mm long; 1.5 mm wide; chartaceous; light brown; without keel. Lemma apex obtuse; mucronate. Palea bowed outwards; 1 length of lemma. Palea surface puberulous; hairy on back. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 3. Anthers 3. Stigmas 2. Ovary umbonate.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    South America: Caribbean.
    Reference
    Bambuseae. Man Gr WI 1997.

    Distribution

    Native to:

    Cuba, Dominican Republic, Haiti

    Other Data

    Arthrostylidium ekmanii Hitchc. appears in other Kew resources:

    Bibliography

    First published in Misc. Publ. U.S.D.A. 243: 16 (1936)

    Accepted by

    • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions

    • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.

    Sources

    GrassBase - The Online World Grass Flora
    http://creativecommons.org/licenses/by-nc-sa/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