1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida somalensis Stapf

        This species is accepted, and its native range is Ethiopia to Kenya.

    [FTEA]

    Gramineae, W. D. Clayton, S. M. Phillips & S. A. Renvoize. Flora of Tropical East Africa. 1974

    Habit
    Caespitose perennial 10–30 cm. high; culms and leaf-sheaths glabrous.
    Leaves
    Leaf-blades convolute-setaceous, 8–25 cm. long, up to 2.5 mm. wide when flattened, rigid, scabrid.
    Inflorescences
    Panicle ovate, 10–30 cm. long, effuse or slightly contracted.
    Spikelets
    Spikelets yellowish or brownish; glumes unequal, acuminate, the lower lanceolate and 8–12 mm. long, the upper linear and 13–18 mm. long; lemma terete, 6–8 mm. long, scabrid above, passing directly into a twisted column 7–10 mm. long without articulation; callus 1.5 mm. long, linear, pungent; awns subequal, 25–40 mm. long.
    Habitat
    Deciduous and semi-desert bushland; ± 900 m.
    Distribution
    K4
    [GB]
    Habit
    Perennial; caespitose. Culms 10-30 cm long. Culm-internodes distally glabrous. Ligule a fringe of hairs. Leaf-blades filiform; convolute; 8-25 cm long; 1-2.5 mm wide; stiff. Leaf-blade surface scabrous.
    Inflorescences
    Inflorescence a panicle. Panicle open; ovate; loose, or effuse; 10-30 cm long. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 13-18 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 1.5 mm long; pubescent; pungent.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 13-18 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 1.5 mm long; pubescent; pungent.
    Glume
    Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 8-12 mm long; 0.6-0.7 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acuminate; muticous, or mucronate. Upper glume linear; 13-18 mm long; 2 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex acuminate.
    Florets
    Fertile lemma elliptic; subterete; 6-8 mm long; coriaceous; without keel; 3 -veined. Lemma surface scabrous; rough above. Lemma margins convolute; covering most of palea. Lemma apex acute; awned; 3 -awned. Principal lemma awn 3-branched; with 25-40 mm long limb; with twisted column; persistent. Column of lemma awn 7-10 mm long. Lateral lemma awns 25-40 mm long; subequal to principal. Palea 0.2 length of lemma; without keels.
    Flowers
    Anthers 3.
    Distribution
    Africa: northeast tropical and east tropical.
    Reference
    Aristideae. FTEA.

    Images

    Distribution

    Native to:

    Ethiopia, Kenya, Somalia

    Aristida somalensis Stapf appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Phillips [s.n.], Somalia K000366849
    Drake-Brockman [124], Somalia K000366846
    Drake-Brockman [127], Somalia K000366847
    Drake-Brockman [s.n. (108?)], Somalia K000366848
    Edwards, L.C. [E241], Kenya K000386233

    First published in Bull. Misc. Inform. Kew 1907: 216 (1907)

    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.
    • 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.
    • Thulin, M. (ed.) (1995). Flora of Somalia 4: i-ii, 1-298. The Royal Botanic Gardens, Kew.
    • Clayton, W.D. (1970). Gramineae Flora of Tropical East Africa 1: 1-176.

    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.
    • Clayton, W.D. (1970). Gramineae Flora of Tropical East Africa 1: 1-176.
    Flora of Tropical East Africa
    • Stapf in Bulletin of Miscellaneous Information, Kew 1907: 216 (1907).

    Sources

    Flora of Tropical East Africa
    Flora of Tropical East Africa
    http://creativecommons.org/licenses/by-nc-sa/3.0

    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