1. Family: Poaceae Barnhart
    1. Genus: Arthrostylidium Rupr.
      1. Arthrostylidium obtusatum Pilg.

        This species is accepted, and its native range is Martinique.

    [GB]
    Habit
    Perennial; caespitose. Rhizomes short; pachymorph. Culms scandent; slender; woody. Culm-internodes terete; thick-walled; smooth; distally glabrous. Lateral branches fastigiate. Branch complement many; in a clump; subtended by a bare patch above the node; with subequal branches. Leaf-sheaths glabrous on surface. Leaf-sheath oral hairs setose; 8-10 mm long. Ligule an eciliate membrane. Leaf-blade base with a brief petiole-like connection to sheath; petiole glabrous. Leaf-blades deciduous at the ligule; lanceolate; 4-8 cm long; 6-12 mm wide; stiff. Leaf-blade venation indistinct; without cross veins. Leaf-blade surface glabrous. Leaf-blade apex obtuse.
    Inflorescences
    Inflorescence composed of racemes; terminal and axillary. Racemes 1; single; straight; bilateral; 4-6 cm long; bearing 5-7 fertile spikelets on each. Spikelet packing lax. Rhachis internodes 10-12 mm long. Spikelets solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 2 basal sterile florets; 4-6 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 12-20 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes straight, or zig-zag.
    Fertile
    Spikelets comprising 2 basal sterile florets; 4-6 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 12-20 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes straight, or zig-zag.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; chartaceous; without keels. Lower glume apex acute. Upper glume lanceolate. Upper glume apex acute.
    Florets
    Basal sterile florets barren; persisting on inflorescence. Lemma of lower sterile floret similar to fertile lemma. Fertile lemma lanceolate, or ovate; 8-9 mm long; chartaceous; without keel. Lemma lateral veins prominent. Lemma margins ciliolate; hairy above. Lemma apex obtuse; mucronate. Palea 1 length of lemma. Palea keels ciliolate. Palea apex ciliate. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 3; 2 mm long. Anthers 3; 4 mm long. Stigmas 2. Ovary umbonate.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    South America: Caribbean.
    Reference
    Bambuseae. Pilger 1997.

    Images

    Distribution

    Native to:

    Windward Is.

    Arthrostylidium obtusatum Pilg. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Martinique K000433119

    First published in I.Urban, Symb. Antill. 2: 340 (1901)

    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

    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 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