1. Family: Poaceae Barnhart
    1. Genus: Cenchrus L.
      1. Cenchrus pauper (Steud.) Morrone

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

    [GB]
    Habit
    Perennial; caespitose. Culms 100-200 cm long. Lateral branches lacking. Ligule a fringe of hairs; 1.5-2 mm long. Leaf-blades involute; 10-20 cm long; 3-4 mm wide. Leaf-blade surface scabrous; rough adaxially.
    Inflorescences
    Inflorescence a panicle; embraced at base by subtending leaf. Panicle spiciform; linear; 4-6 cm long. Primary panicle branches accrescent to a central axis; with lateral stumps on axis. Panicle axis angular; puberulous; bearing deciduous spikelet clusters. Spikelets subtended by an involucre. Fertile spikelets sessile; 1 in the cluster. Involucre composed of bristles; 2-2.5 mm long; base truncate. Involucral bristles deciduous with the fertile spikelets; 3-4 in principal whorl; with longest bristle scarcely emergent; terete; flexible; antrorsely scaberulous; glabrous.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 2.5 mm long; falling entire; deciduous with accessory branch structures.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 2.5 mm long; falling entire; deciduous with accessory branch structures.
    Glume
    Glumes shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 0.2-0.25 length of spikelet; membranous; without keels; 0 -veined. Lower glume lateral veins absent. Lower glume apex obtuse, or acute. Upper glume ovate; 0.33-0.5 length of spikelet; membranous; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex obtuse, or acute.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret oblong; 1 length of spikelet; membranous; 5 -veined; scaberulous; rough above; acute. Fertile lemma lanceolate; 2.5 mm long; chartaceous; without keel. Lemma margins flat. Lemma apex acute. Palea 1 length of lemma; chartaceous.
    Flowers
    Lodicules absent. Anthers 3.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    South America: western South America.
    Reference
    Paniceae. Turpe 1994.

    Images

    Distribution

    Native to:

    Ecuador, Galápagos

    Cenchrus pauper (Steud.) Morrone appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 1982 Andersson [[30]], Galápagos Pennisetum pauperum K000643097
    Jan 1, 1982 s.coll. [s.n.], Galápagos Pennisetum pauperum K000643095
    Jan 1, 1982 s.coll. [s.n.], Galápagos Pennisetum pauperum K000643096
    Jan 1, 1982 s.coll. [s.n.], Galápagos Pennisetum pauperum K000643098 isotype

    First published in Ann. Bot. (Oxford) 106: 128 (2010)

    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