1. Family: Poaceae Barnhart
    1. Genus: Arthrostylidium Rupr.
      1. Arthrostylidium ecuadorense Judz. & L.G.Clark

        This species is accepted, and its native range is W. South America.

    [GB]
    Habit
    Perennial; caespitose. Rhizomes short; pachymorph. Culms scandent; 300-600 cm long; 1-2.5 mm diam.; woody. Culm-internodes terete; solid; purple; retrorsely scabrous; distally glabrous. Lateral branches dendroid. Bud complement 1. Branch complement three, or several; in a clump; subtended by a bare patch above the node; with 1 branch dominant; thinner than stem. Leaves 3-7 per branch. Leaf-sheaths striately veined; puberulous. Leaf-sheath oral hairs setose; curly; 3-6 mm long; dark. Ligule a ciliolate membrane; 0.3-0.4 mm long. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.1-0.25 cm long; petiole glabrous, or pubescent. Leaf-blades lanceolate; 3.8-10 cm long; 8-13 mm wide. Leaf-blade surface glabrous. Leaf-blade margins scabrous (below). Leaf-blade apex acuminate.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; flexuous, or sinuous; bilateral; 5-9 cm long; bearing 3-6 fertile spikelets on each. Rhachis semiterete. Spikelet packing broadside to rhachis. Spikelets solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 5-9 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 25-40 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes eventually visible between lemmas.
    Fertile
    Spikelets comprising 5-9 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 25-40 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes eventually visible between lemmas.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume ovate; 3-4.5 mm long; 0.75-9 length of upper glume; chartaceous; without keels; 1-3 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent, or obscure. Lower glume surface glabrous, or puberulous. Lower glume apex acute. Upper glume ovate; 3.5-6 mm long; 0.5 length of adjacent fertile lemma; without keels; 3-5 -veined. Upper glume primary vein scabrous. Upper glume surface glabrous, or puberulous. Upper glume apex acute.
    Florets
    Fertile lemma lanceolate; 6-13 mm long; chartaceous; red, or purple; without keel; 7-9 -veined. Lemma surface glabrous, or puberulous. Lemma apex acute; mucronate. Palea 1 length of lemma. Palea keels ciliolate. Palea surface pubescent; hairy on back. Palea apex emarginate to obtuse. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 3; lanceolate; 2.7-3 mm long; veined. Anthers 3; linear; 4.5-6 mm long; purple. Stigmas 2.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    South America: western South America.
    Reference
    Bambuseae. Jud. & Clarke 2001.
    [CPLC]

    Bernal, R., Gradstein, S.R. & Celis, M. (eds.). 2015. Catálogo de plantas y líquenes de Colombia. Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá. http://catalogoplantasdecolombia.unal.edu.co

    Distribution
    Nativa en Colombia; Alt. 2900 - 3100 m.; Andes.
    Habit
    Trepadora
    Conservation
    No Evaluada

    Distribution

    Native to:

    Bolivia, Colombia, Ecuador

    Arthrostylidium ecuadorense Judz. & L.G.Clark appears in other Kew resources:

    First published in Syst. Bot. 18: 82 (1993)

    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.
    • Jørgensen, P.M. & León-Yánez, S. (eds.) (1999). Catalogue of the Vascular Plants of Ecuador Monographs in Systematic Botany from the Missouri Botanical Garden 75: i-viii, 1-1181.

    Literature

    Kew Backbone Distributions
    • Giraldo-Cañas, D. (2011). Catálogo de la familia Poaceae en Colombia Darwiniana 49: 139-247.
    • Jørgensen, P.M. & León-Yánez, S. (eds.) (1999). Catalogue of the Vascular Plants of Ecuador Monographs in Systematic Botany from the Missouri Botanical Garden 75: i-viii, 1-1181.

    Sources

    Catálogo de Plantas y Líquenes de Colombia
    http://creativecommons.org/licenses/by-nc-sa/3.0

    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