1. Family: Poaceae Barnhart
    1. Genus: Chusquea Kunth
      1. Chusquea rigida (L.G.Clark) L.G.Clark

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

    [GB]
    Habit
    Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; reed-like; 100-250 cm long; 4-8 mm diam.; woody. Culm-internodes terete. Lateral branches lacking. Leaf-sheaths keeled; glabrous on surface, or pubescent. Leaf-sheath auricles erect; 4-11 mm long. Ligule a ciliate membrane; 5-15 mm long. Leaf-blade base without a false petiole. Leaf-blades erect; deciduous at the ligule; lanceolate; 24-63 cm long; 11-21 mm wide; stiff. Leaf-blade midrib conspicuous. Leaf-blade venation with distinct cross veins. Leaf-blade surface glabrous. Leaf-blade margins cartilaginous; smooth, or scaberulous.
    Inflorescences
    Inflorescence a panicle; subtended by an unspecialized leaf-sheath, or bracts (1 bract 3mm long). Peduncle 10-66 cm long; glabrous. Panicle open; lanceolate; 33-68 cm long. Primary panicle branches ascending, or spreading; 9-26 cm long. Panicle axis hirsute. Panicle branches hirsute; with prominent pulvini. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 0.5-2 mm long; scabrous.
    Spikelets
    Spikelets comprising 2 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 3-5 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 2 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 3-5 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume ovate; 2.5-3 mm long; coriaceous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume surface scabrous; inner surface pubescent. Lower glume apex acuminate. Upper glume ovate; 2-3 mm long; coriaceous; without keels; 1(-3) -veined. Upper glume lateral veins absent, or obscure. Upper glume surface scabrous; inner surface pubescent. Upper glume apex acuminate.
    Florets
    Basal sterile florets similar; barren; without significant palea; attached to and deciduous with the fertile. Lemma of lower sterile floret ovate; 2-4.5 mm long; coriaceous; 3 -veined; smooth, or scaberulous; rough above; glabrous, or puberulous; hairy all along, or above; acuminate; mucronate. Lemma of upper sterile floret ovate; 2.2-4.5 mm long; smooth, or scabrous (above); mucronate. Fertile lemma ovate; 2.9-5 mm long; coriaceous; without keel; 5(-7) -veined. Lemma surface smooth, or scaberulous; rough above; glabrous, or pubescent; hairy above. Lemma apex acute; mucronate. Palea 2.8-4.5 mm long; coriaceous; 2 -veined; without keels. Palea surface smooth, or scaberulous.
    Flowers
    Lodicules 3; 1.2-1.3 mm long; veined; glabrous. Anthers 3; 1.5-3 mm long. Stigmas 2. Ovary glabrous.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    South America: western South America.
    Reference
    Bambuseae. Clarke 2001.

    Distribution

    Native to:

    Ecuador

    Chusquea rigida (L.G.Clark) L.G.Clark appears in other Kew resources:

    First published in Syst. Bot. 34: 681 (2009)

    Literature

    Kew Backbone Distributions
    • 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

    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 2019. 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 2019. 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