1. Family: Poaceae Barnhart
    1. Genus: Cenchrus L.
      1. Cenchrus platyacanthus Andersson

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

    [GB]
    Habit
    Annual. Culms 20-90 cm long. Leaf-sheaths pubescent; outer margin hairy. Leaf-sheath oral hairs ciliate. Ligule a fringe of hairs; 1.4-2.3 mm long. Leaf-blades 4-24 cm long; 2-8 mm wide. Leaf-blade surface glabrous. Leaf-blade apex acute.
    Inflorescences
    Inflorescence a panicle. Panicle spiciform; linear; dense (internodes 0.6-1.4mm); 3.8-8.6 cm long; 0.6-2 cm wide. Primary panicle branches accrescent to a central axis; with sessile scars on axis. Panicle axis angular; scaberulous; bearing deciduous spikelet clusters. Spikelets subtended by an involucre. Fertile spikelets sessile; 1 in the cluster. Involucre composed of bristles; connate into a cup below; ovate; 2.8-6 mm long; base obtuse. Involucral bristles deciduous with the fertile spikelets; emerging irregularly from body of a burr; 5-10 in principal whorl; 1.8-3 mm long; terete; rigid; retrorsely scaberulous; glabrous, or pubescent; spinose.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; acuminate; 2.4-5.8 mm long; falling entire; deciduous with accessory branch structures.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; acuminate; 2.4-5.8 mm long; falling entire; deciduous with accessory branch structures.
    Glume
    Glumes shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 0.3-1.1 mm long; 0.1-0.2 length of spikelet; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 1.9-3.4 mm long; 0.6-0.8 length of spikelet; membranous; without keels; 3 -veined. Upper glume apex acute.
    Florets
    Basal sterile florets barren; with palea. Lemma of lower sterile floret ovate; 2.4-3.7 mm long; 0.6-1 length of spikelet; membranous; 3 -veined; acute. Fertile lemma ovate; 2.2-5.8 mm long; coriaceous; much thinner on margins; without keel; 3 -veined. Lemma margins flat. Lemma apex obtuse. Palea coriaceous.
    Flowers
    Anthers 0.5-1 mm long.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    South America: western South America.
    Reference
    Paniceae. De Lisle.

    Images

    Distribution

    Native to:

    Galápagos

    Cenchrus platyacanthus Andersson appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Andersson [33], Galápagos K000643116

    First published in Kongl. Vetensk. Acad. Handl. 1853: 139 (1855)

    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.
    • 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
    • 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

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/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