1. Family: Poaceae Barnhart
    1. Genus: Chusquea Kunth
      1. Chusquea subtilis Widmer & L.G.Clark

        This species is accepted, and its native range is Costa Rica.

    [GB]
    Habit
    Perennial. Culms arching; 200-600 cm long; 15-30 mm diam.; woody; without nodal roots. Culm-internodes terete; 15-35 cm long; smooth, or scaberulous. Lateral branches dendroid; infravaginal. Bud complement 70-80. Branch complement many; in a clump; thinner than stem. Culm-sheaths 17-20 cm long; pilose; hairy at the base. Culm-sheath ligule 1-2 mm high; ciliolate. Culm-sheath blade triangular; narrower than sheath; demarcated but persistent; erect; 2.6-4.5 cm long; pubescent. Leaves 3-5 per branch. Leaf-sheaths glabrous on surface; outer margin hairy. Leaf-sheath oral hairs ciliate; curly; 1-1.5 mm long. Ligule an eciliate membrane; 1 mm long; pubescent on abaxial surface; obtuse. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.1-0.2 cm long. Leaf-blades linear; 12-21.6 cm long; 3-6 mm wide. Leaf-blade venation without cross veins. Leaf-blade surface glabrous.
    Inflorescences
    Inflorescence a panicle. Panicle open; linear; 11-18 cm long. Primary panicle branches 2-4.5 cm long. Panicle axis angular; smooth, or scabrous; glabrous. Panicle branches angular; glabrous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels angular; 1-7 mm long; glabrous.
    Spikelets
    Spikelets comprising 2 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 9.8-11.8 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 elliptic; laterally compressed; 9.8-11.8 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes persistent; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 0.5-0.8 mm long; membranous; without keels; 0 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 0.6-1 mm long; without keels; 0 -veined. Upper glume primary vein absent. Upper glume apex acute.
    Florets
    Basal sterile florets barren; without significant palea; attached to and deciduous with the fertile. Lemma of lower sterile floret ovate; 7.5-9.2 mm long; chartaceous; 7 -veined; scabrous; attenuate. Lemma of upper sterile floret ovate; 9.3-11.8 mm long; chartaceous; scabrous; acute; awned. Awn of upper sterile floret 1-2 mm long. Fertile lemma ovate; 10-11.7 mm long; coriaceous; without keel; 7 -veined. Lemma surface scabrous. Lemma apex acute; awned; 1 -awned. Principal lemma awn 2 mm long overall. Palea 7.4-9 mm long; 4-6 -veined. Palea surface scabrous.
    Flowers
    Lodicules 3; membranous; ciliate. Anthers 3; 4.2-5.2 mm long. Stigmas 2.
    Fruits
    Caryopsis with adherent pericarp; 4.7-6 mm long; apex unappendaged.
    Distribution
    South America: Mesoamericana.
    Reference
    Bambuseae. Clark 1995.

    Distribution

    Native to:

    Costa Rica

    Chusquea subtilis Widmer & L.G.Clark appears in other Kew resources:

    First published in Ann. Missouri Bot. Gard. 78: 167 (1991)

    Accepted by

    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Davidse, G. & al. (eds.) (1994). Flora Mesoamericana 6: 1-543. Universidad Nacional Autónoma de México, México, D.F.

    Literature

    Kew Backbone Distributions
    • Davidse, G. & al. (eds.) (1994). Flora Mesoamericana 6: 1-543. Universidad Nacional Autónoma de México, México, D.F.

    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