1. Family: Poaceae Barnhart
    1. Genus: Arthrostylidium Rupr.
      1. Arthrostylidium chiribiquetense Londoño & L.G.Clark

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

    [GB]
    Habit
    Perennial; caespitose. Rhizomes short; pachymorph. Culms scandent; 300-500 cm long; 3-6 mm diam.; woody. Culm-internodes terete; thin-walled (pith filled); 28-52 cm long; distally hispid; with reflexed hairs. Lateral branches dendroid; intravaginal. Bud complement 1. Branch complement several; in a clump; subtended by a bare patch above the node; with 1 branch dominant; thinner than stem. Culm-sheaths persistent; 3.5-5 cm long; 3 times as long as wide; glabrous, or puberulous; ciliate on shoulders; shoulders with curved hairs; shoulders with 2 mm long hairs. Culm-sheath ligule 0.2 mm high. Culm-sheath blade ovate; demarcated but persistent; erect; 1-4 cm long; 9-20 mm wide; glabrous on surface and with ciliate margins. Leaves 9-14 per branch. Leaf-sheaths 2.5-4 cm long; mostly shorter than adjacent culm internode, or subequal to internodes; striately veined; glabrous on surface. Leaf-sheath oral hairs setose; curly; 5-10 mm long; dark. Ligule a ciliolate membrane; 0.8-1 mm long; pubescent on abaxial surface. Collar with external ligule. Leaf-blade base truncate; with a brief petiole-like connection to sheath; petiole 0.2-0.5 cm long. Leaf-blades ovate; 6-18.5 cm long; 20-50 mm wide. Leaf-blade midrib indistinct. Leaf-blade venation with distinct cross veins. Leaf-blade apex acuminate.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; straight; bilateral; 8-17 cm long; bearing 10-18 fertile spikelets on each. Rhachis glabrous on surface, or pilose on surface. Spikelet packing broadside to rhachis; lax. Rhachis internodes 5-10 mm long. Spikelets spreading; solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 2-3 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 5-17 mm long; 0.6-0.8 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 6.5-7 mm long.
    Fertile
    Spikelets comprising 2-3 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 5-17 mm long; 0.6-0.8 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 6.5-7 mm long.
    Glume
    Glumes two, or several; comprising 0-2 gemmiferous bracts; 1-2 empty glumes; persistent; similar; shorter than spikelet. Lower glume ovate; 3-4 mm long; chartaceous; without keels; 5-7 -veined. Lower glume lateral veins prominent. Lower glume surface pubescent. Lower glume margins ciliolate. Lower glume apex acute. Upper glume ovate; 4.3-5.5 mm long; without keels; 5-7 -veined. Upper glume primary vein conspicuous. Upper glume surface pubescent. Upper glume margins ciliolate. Upper glume apex acute.
    Florets
    Fertile lemma oblong; 5.5-8.5 mm long; 2-2.5 mm wide; chartaceous; without keel; 7-9 -veined. Lemma surface rugulose; without grooves; pubescent. Lemma margins ciliolate; hairy above. Lemma apex acute; mucronate. Palea 6.5-8.1 mm long. Palea apex ciliate. Apical sterile florets 1 in number; rudimentary.
    Flowers
    Lodicules 3; 1.5 mm long; veined; ciliate. Anthers 3. Stigmas 2.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    South America: western South America.
    Reference
    Bambuseae. Lord & Clarke 2001.

    Distribution

    Native to:

    Colombia

    Arthrostylidium chiribiquetense Londoño & L.G.Clark appears in other Kew resources:

    First published in Novon 8: 412 (1998)

    Accepted by

    • Giraldo-Cañas, D. (2011). Catálogo de la familia Poaceae en Colombia Darwiniana 49: 139-247.
    • 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
    • Giraldo-Cañas, D. (2011). Catálogo de la familia Poaceae en Colombia Darwiniana 49: 139-247.

    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 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