Skip to main content
  1. Family: Poaceae Barnhart
    1. Genus: Arthrostylidium Rupr.
      1. Arthrostylidium virolinense Londoño & L.G.Clark

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

    [GB]
    Habit
    Perennial; caespitose. Rhizomes short; pachymorph. Culms scandent; 200-300 cm long; 1-3 mm diam.; woody. Culm-internodes terete; solid; 7-21 cm long; papillose; distally glabrous. 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, or 2 branches dominant; thinner than stem. Culm-sheaths persistent; 2-4 cm long; 4 times as long as wide; hispid; ciliate on shoulders; shoulders with curved hairs; shoulders with 1 mm long hairs. Culm-sheath ligule 0.2 mm high; ciliolate. Culm-sheath blade lanceolate; demarcated but persistent; erect; 0.9-2.1 cm long; 1-2 mm wide; hispid. Leaves 8-12 per branch. Leaf-sheaths striately veined; hispid; outer margin hairy. Leaf-sheath oral hairs setose; curly; 3-5 mm long. Ligule a ciliolate membrane; 0.1-0.2 mm long. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.08-0.1 cm long; petiole pubescent. Leaf-blades lanceolate; 1-4.5 cm long; 2-4.5 mm wide; mid-green and light green; discolorous with last colour beneath. Leaf-blade surface glabrous. Leaf-blade margins scabrous. Leaf-blade apex acute.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; bilateral; 3-4 cm long; bearing few fertile spikelets; bearing 1-4 fertile spikelets on each. Rhachis pilose on surface. Spikelet packing broadside to rhachis. Rhachis internodes 5-7 mm long. Spikelets solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 3-5 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 10-16 mm long; 1.5-4 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1.5-2 mm long; pilose.
    Fertile
    Spikelets comprising 3-5 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 10-16 mm long; 1.5-4 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1.5-2 mm long; pilose.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume ovate; 1.5-2.5 mm long; chartaceous; without keels; 3 -veined. Lower glume surface hispid. Lower glume apex obtuse. Upper glume ovate; 2.5-3 mm long; without keels; 5 -veined. Upper glume surface hispid. Upper glume apex obtuse.
    Florets
    Fertile lemma ovate; 4-4.5 mm long; 2-2.5 mm wide; chartaceous; purple; without keel; 5-6 -veined. Lemma lateral veins with cross-veins. Lemma surface rugulose; without grooves; glabrous, or hispidulous. Lemma margins ciliolate; hairy above. Lemma hairs 4-4.5 mm long. Lemma apex acute. Palea keels eciliate. Palea apex pubescent. Apical sterile florets 1 in number; lanceolate.
    Flowers
    Lodicules 3; 1-1.5 mm long; veinless. Anthers 3; 2.5-3 mm long; pallid, or yellow. Stigmas 2.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    South America: western South America.
    Reference
    Bambuseae. Lord & 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
    Endémica y nativa en Colombia; Alt. 1800 - 1900 m.; Andes.
    Habit
    Trepadora
    Conservation
    No Evaluada

    Distribution

    Native to:

    Colombia

    Other Data

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

    Bibliography

    First published in Novon 8: 417 (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

    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