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

        This species is accepted, and its native range is Tanzania to S. Tropical Africa.

    [GB]
    Habit
    Perennial; caespitose. Culms 60-90 cm long. Culm-internodes distally woolly. Leaf-sheaths glabrous on surface, or pilose. Ligule a fringe of hairs. Leaf-blades curled; 10-20 cm long; 1.5-3 mm wide.
    Inflorescences
    Inflorescence a panicle. Panicle contracted; lanceolate; interrupted; 5-15 cm long; contracted about primary branches. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 5-8 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.3 mm long; bearded; truncate.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 5-8 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.3 mm long; bearded; truncate.
    Glume
    Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 4-8 mm long; 0.9-1.1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume surface asperulous. Lower glume apex acute; muticous, or mucronate, or awned; 1 -awned. Lower glume awn 0-1.1 mm long. Upper glume lanceolate; 5-8 mm long; 1-1.2 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex dentate; 2 -fid; muticous, or mucronate.
    Florets
    Fertile lemma elliptic; subterete; 5-6.5 mm long; coriaceous; without keel; 3 -veined. Lemma surface scaberulous. Lemma margins convolute; covering most of palea. Lemma apex acute; awned; 3 -awned. Principal lemma awn 3-branched; with 8-17 mm long limb; with a straight or slightly twisted column; persistent. Column of lemma awn (0.5-)1.5-2.5(-5.5) mm long. Lateral lemma awns 7-13 mm long; shorter than principal. Palea 0.1 length of lemma; without keels.
    Flowers
    Anthers 3.
    Distribution
    Africa: east tropical and southern tropical.
    Reference
    Aristideae. FTEA.
    [FZ]

    Gramineae, E. Launert. Flora Zambesiaca 10:1. 1971

    Habit
    Perennial, 30-80 cm. high, caespitose.
    Culms
    Culms erect, simple, or slightly branched from some of the upper nodes, densely greyish- or whitish-woolly, sometimes in the upper part less woolly or pubescent only, 5 — many-noded; nodes usually glabrous.
    Leaf sheaths
    Leaf-sheaths tight or lax, somewhat keeled, glabrous or minutely pubescent or more or less pilose.
    Ligules
    Ligule a ciliolate rim; auricles pubescent or barbate; collar glabrous or pubescent.
    Leaf lamina
    Leaf-laminae up to 20 cm. long, with prominent or raised marginal nerves, scabrous and more or less pilose above, scaberulous or glabrous, smooth beneath, laminae of the lower leaves c. 3 mm. wide, flat, curled when old, those of the upper scarcely 1 mm. wide when expanded, convolute, setaceously acuminate.
    Inflorescences
    Panicle 5-15 cm. long, long-exserted, contracted and more or less interrupted, with scaberulous or minutely pubescent or more or less pilose axis and branches; branches single or 2-nate, angular, appressed, much branched, the lowermost 5-6 cm. long, naked at the base, with a shorter few-flowered branchlet at the base.
    Spikelets
    Spikelets yellowish-green or brownish, sometimes tinged with purple.
    Glume
    Glumes equal or slightly unequal, linear-lanceolate, usually scabridulous, sometimes slightly pilose, keeled, 1-nerved; the inferior 3.5-8 mm. long, scabrous on the keel, gradually tapering into an awn up to 3 mm. long, the superior 5-8 mm. long, sometimes nearly glabrous on the back, usually glabrous on the keel, 2-fid at the apex, with an awn c. 1 mm. long from the sinus.
    Lemma
    Lemma 5-6 mm. long, glabrous, smooth at the base, densely scaberulous towards the apex; callus c. 0.5 mm. long, obtuse, densely short-barbate; column up to 2·5 mm. long, slightly twisted, scabrous; awns unequal, suberect or slightly spreading; the central 1·1-1·6 mm. long, the lateral ones 9-11 mm. long; articulation absent.
    [FTEA]

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

    Habit
    Densely caespitose perennial 60–90 cm. high, the culms woolly tomentose for some distance below the nodes.
    Leaves
    Leaf-blades flat, curly, up to 20 cm. long and 3 mm. wide; sheaths glabrous to villous.
    Inflorescences
    Panicle 5–15 cm. long, narrow, ± interrupted, the spikelets clustered about the short primary branches.
    Spikelets
    Spikelets enclosed by narrowly lanceolate subequal glumes, the lower sometimes a little longer than the upper; lower glume 4–8 mm. long, scaberulous, with or without an awn-point up to 2.5 mm. long; upper glume 5–8 mm. long, glabrous, minutely 2-toothed, with or without a mucro up to 1 mm. long; lemma terete, 5–6.5 mm. long, scaberulous; callus oblong, 0.3 mm. long, truncate, bearded along the sides; awn with a slightly twisted column (0.5–)1.5–2.5(–5.5) mm. long, not articulated, the central limb 8–17 mm. long, the laterals 7–13 mm. long.
    Habitat
    Open places in wooded grassland; 1250–1600 m.
    Distribution
    T4 T7

    Images

    Distribution

    Native to:

    Angola, Mozambique, Tanzania, Zambia, Zimbabwe

    Aristida leucophaea Henrard appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Eyles, F. [2238], Zimbabwe K000366803 Unknown type material
    Pearson, H. H. W. [276006], Angola K000366805
    Stent, S. M. [3976], Zimbabwe K000366804

    First published in Meded. Rijks-Herb. 54A: 298 (1927)

    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.
    • Launert, E. (1971). Flora Zambesiaca 10(1): 1-152. Royal Botanic Gardens, Kew.
    • Clayton, W.D. (1970). Gramineae Flora of Tropical East Africa 1: 1-176.

    Literature

    Kew Backbone Distributions
    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • Launert, E. (1971). Flora Zambesiaca 10(1): 1-152. Royal Botanic Gardens, Kew.
    • Clayton, W.D. (1970). Gramineae Flora of Tropical East Africa 1: 1-176.
    Flora of Tropical East Africa
    • D.M. Napper, Grasses of Tanganyika: 24 (1965).
    • Henr. in Med. Rijks Herb. Leiden 54A: 298 (1927).

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    http://creativecommons.org/licenses/by-nc-sa/3.0

    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