1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida dewinteri Giess

        This species is accepted, and its native range is Angola to Namibia.

    [GB]
    Habit
    Annual. Culms erect, or geniculately ascending; 50-100 cm long; 2-3 -noded. Culm-internodes distally glabrous. Culm-nodes purple. Lateral branches lacking. Leaf-sheath oral hairs woolly. Ligule a fringe of hairs. Leaf-blades flat, or involute; 15-30 cm long; 2-4 mm wide.
    Inflorescences
    Inflorescence a panicle. Panicle open; elliptic; effuse; 15-30 cm long; 10-15 cm wide. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 10-11 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 1 mm long; pilose; 2-toothed.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 10-11 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 1 mm long; pilose; 2-toothed.
    Glume
    Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume oblong; 3.5-4 mm long; 0.3-0.4 length of upper glume; membranous; yellow and black (at tip); 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume lanceolate; 10-11 mm long; 1.5 length of adjacent fertile lemma; membranous; yellow and black (at tip); 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.
    Florets
    Fertile lemma elliptic; subterete; 7-8 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 35 mm long limb; with twisted column; deciduous; abscissing from top of lemma. Column of lemma awn 1.3-1.4 mm long. Lateral lemma awns 25 mm long; shorter than principal. Palea oblong; 0.7 mm long; 0.1 length of lemma; hyaline; 0 -veined; without keels.
    Flowers
    Lodicules 2; ovate; 1-1.25 mm long; veined; obtuse. Anthers 3; 3 mm long; yellow.
    Fruits
    Caryopsis with adherent pericarp; linear; 3-3.5 mm long. Hilum linear; 1 length of caryopsis.
    Distribution
    Africa: south.
    Reference
    Aristideae. Giess 1997.

    Distribution

    Native to:

    Angola, Namibia

    Aristida dewinteri Giess appears in other Kew resources:

    First published in Bothalia 10: 365 (1971)

    Accepted by

    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa: an annotated checklist. Strelitzia 14.: i-vi, 1-1231. National Botanical Institute, Pretoria.

    Literature

    Kew Backbone Distributions
    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa: an annotated checklist. Strelitzia 14.: i-vi, 1-1231. National Botanical Institute, Pretoria.

    Sources

    GrassBase - The Online World Grass Flora
    http://creativecommons.org/licenses/by-nc-sa/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