1. Family: Poaceae Barnhart
    1. Genus: Cenchrus L.
      1. Cenchrus gracilescens (Hochst.) ined.

        This species is accepted, and its native range is NE. Tropical Africa.

    [GB]
    Habit
    Perennial; caespitose. Rhizomes short. Culms geniculately ascending, or decumbent; 45-60 cm long; woody; rooting from lower nodes. Lateral branches ample. Leaf-sheaths glabrous on surface. Ligule a fringe of hairs. Leaf-blades flat, or conduplicate, or involute; 10-20 cm long; 3-5 mm wide. Leaf-blade surface smooth, or scaberulous; rough adaxially; glabrous, or pilose; sparsely hairy; hairy adaxially.
    Inflorescences
    Inflorescence a panicle. Panicle spiciform; linear; 3-7.5 cm long; 0.5-0.8 cm wide. Primary panicle branches accrescent to a central axis; with lateral stumps 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; cuneate; 10-20 mm long; base obtuse; base villous. Involucral bristles deciduous with the fertile spikelets; numerous; 15-30 in principal whorl; with one conspicuously longer bristle; 14-24 mm long; terete; flexible; ciliate.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; acute; 3.5-4 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; acute; 3.5-4 mm long; falling entire; deciduous with accessory branch structures.
    Glume
    Glumes dissimilar; shorter than spikelet; thinner than fertile lemma. Lower glume lanceolate, or ovate; 1-2 mm long; 0.33-0.5 length of spikelet; hyaline; without keels; 0-1 -veined. Lower glume lateral veins absent. Lower glume apex obtuse, or acute. Upper glume lanceolate; 2.5-3 mm long; 0.75 length of spikelet; membranous; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute, or acuminate.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret lanceolate; 1 length of spikelet; membranous; 3-5 -veined; scaberulous; rough above; acute, or acuminate; mucronate. Fertile lemma oblong; 3.5-4 mm long; membranous; without keel; 3-5 -veined. Lemma margins flat. Lemma apex acute. Palea 1 length of lemma; membranous.
    Flowers
    Lodicules absent. Anthers 3; 2 mm long; anther tip smooth. Styles connate below; 1 of their length connate.
    Distribution
    Africa: northeast tropical.
    Reference
    Paniceae. FTA 1993.

    Images

    Distribution

    Native to:

    Eritrea, Ethiopia, Sudan

    Cenchrus gracilescens (Hochst.) ined. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Schimper [1411], Ethiopia Pennisetum gracilescens K000281181 isotype
    Schimper [1411], Ethiopia Pennisetum gracilescens K000281182 isotype

    Literature

    Kew Backbone Distributions
    • Hedberg, I. & Edwards, S. (eds.) (1995). Flora of Ethiopia and Eritrea 7: 1-430. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.

    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