1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida protensa Henrard

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

    [GB]
    Habit
    Perennial; caespitose. Culms 20-40 cm long. Ligule a fringe of hairs. Leaf-blades filiform; involute; 15-25 cm long; 1-2 mm wide.
    Inflorescences
    Inflorescence a panicle; embraced at base by subtending leaf. Panicle spiciform; lanceolate (cuneate); 12-16 cm long. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 20-25 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 2 mm long; pubescent; pungent.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 20-25 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 2 mm long; pubescent; pungent.
    Glume
    Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume linear, or lanceolate; 12-14 mm long; 0.6 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex setaceously attenuate. Upper glume linear, or lanceolate; 20-25 mm long; 4 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex dentate; 2 -fid; caudate; awned; 1 -awned. Upper glume awn 5-10 mm long.
    Florets
    Fertile lemma lanceolate; subterete; 5-6 mm long; coriaceous; without keel; 3 -veined. Lemma surface smooth, or scaberulous; rough above. Lemma margins convolute; covering most of palea. Lemma apex acute; awned; 3 -awned. Principal lemma awn 3-branched; with 80-90 mm long limb; with twisted column; deciduous; abscissing from top of lemma. Column of lemma awn 6-8.5 mm long. Lateral lemma awns 80-90 mm long; subequal to principal. Palea without keels.
    Flowers
    Lodicules 2; oblanceolate; 1.5 mm long; membranous; veined; acute. Anthers 3.
    Fruits
    Caryopsis with adherent pericarp; linear; 5 mm long.
    Distribution
    Africa: northeast tropical.
    Reference
    Aristideae. TAC.
    Diagnostic
    Column apex dilated.

    Images

    Distribution

    Native to:

    Somalia

    Aristida protensa Henrard appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Drake-Brockman, R.E. [957], Somalia K000366831 Unknown type material

    First published in Meded. Rijks-Herb. 54B: 467 (1928)

    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.
    • Thulin, M. (ed.) (1995). Flora of Somalia 4: i-ii, 1-298. The Royal Botanic Gardens, Kew.
    • Ghazanfar, S.A. (1992). An Annotated Catalogue of the Vascular Plants of Oman and their Vernacular names Scripta Botanica Belgica 2: 1-153.

    Literature

    Kew Backbone Distributions
    • Thulin, M. (ed.) (1995). Flora of Somalia 4: i-ii, 1-298. The Royal Botanic Gardens, Kew.

    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 2020. 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 2020. 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