1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida vestita Thunb.

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

    [FZ]

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

    Habit
    Perennial, up to 85 cm. high, robust, densely caespitose.
    Culms
    Culms rigid, simple, sometimes branched from the base or from the nodes, pubescent or woolly in the lower part, often glabrous upwards, 3-4-noded; nodes glabrous.
    Leaf sheaths
    Lower leaf-sheaths broad and papery, straw-coloured, lanate on the back and along the margins, soon becoming glabrous.
    Ligules
    Ligule a very shortly ciliate rim; auricles with a tuft of woolly hairs.
    Leaf lamina
    Leaf-laminae up to 24 x 0·4 cm., flat at the base, involute in the upper part, shortly pubescent or somewhat villous above, glabrous beneath.
    Inflorescences
    Panicle up to 20 x 12 cm., pyramidal, effuse, open or laxly contracted; axis glabrous or with scattered white hairs, sometimes barbate in the lower axils, with fine, suberect or somewhat spreading scabrous branches.
    Spikelets
    Spikelets greenish or brownish.
    Glume
    Glumes unequal, firm, 1-nerved, glabrous; the inferior 4·5-7 mm. long, lanceolate, rounded at the apex; the superior 9-13 mm. long, narrowly lanceolate, somewhat denticulate along the margins towards the apex, slightly emarginate.
    Lemma
    Lemma 7-11 mm. long, glabrous, often mottled with purple; callus 1-1·5 mm. long, 2-fid, barbate; column 2-7 mm. long, strongly twisted; awns unequal; the central 20-35 mm. long, the lateral ones shorter; articulation between the apex of the lemma and the base of the column.
    [GB]
    Habit
    Perennial; caespitose. Butt sheaths glabrous, or woolly. Culms 40-120 cm long. Culm-internodes distally pubescent, or woolly. Leaf-sheath oral hairs woolly. Ligule a fringe of hairs. Leaf-blades flat, or convolute; 20-40 cm long; 2-4 mm wide.
    Inflorescences
    Inflorescence a panicle. Panicle open; pyramidal; effuse; 15-30 cm long. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 9-13 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 1 mm long; pilose; truncate, or 2-toothed.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 9-13 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 1 mm long; pilose; truncate, or 2-toothed.
    Glume
    Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 4.5-7 mm long; 0.5 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume lanceolate; 9-13 mm long; 1.2-1.3 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex emarginate.
    Florets
    Fertile lemma elliptic; subterete; 7-11 mm long; coriaceous; without keel; 3 -veined. Lemma margins convolute; covering most of palea. Lemma apex acute; awned; 3 -awned. Principal lemma awn 3-branched; with 20-35 mm long limb; with twisted column; deciduous; abscissing from top of lemma. Column of lemma awn 2-7 mm long. Lateral lemma awns 15-30 mm long; shorter than principal. Palea 0.1 length of lemma; without keels.
    Flowers
    Anthers 3.
    Distribution
    Africa: east tropical, southern tropical, and south. North America: Mexico.
    Reference
    Aristideae. FTEA.
    [FTEA]

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

    Habit
    Densely caespitose perennial; culms 40–120 cm. high, the internodes, or at least the lower, pubescent to woolly.
    Leaves
    Leaf-blades linear, up to 40 cm. long and 4 mm. wide, expanded or rolled, with a flake of wool at the auricles; lower sheaths woolly or glabrescent.
    Inflorescences
    Panicle pyramidal, effuse, up to 30 cm. long.
    Spikelets
    Spikelets light brown or pallid; glumes unequal; lower glume lanceolate, 4.5–7 mm. long, obtuse; upper glume narrowly lanceolate, 9–13 mm. long; lemma terete, 7–11 mm. long, glabrous, often purple mottled, articulated at the apex; callus 1 mm. long, broadly linear, 2-toothed or emarginate; column 2–7 mm. long; central awn 2–3.5 cm. long, the laterals a little shorter.
    Habitat
    Deciduous bushland and thicket on dry soils; 1000–1500 m.
    Distribution
    T4 T7 southwards to the Cape

    Images

    Distribution

    Native to:

    Cape Provinces, Free State, Mozambique, Namibia, Northern Provinces, Tanzania, Zambia, Zimbabwe

    Aristida vestita Thunb. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Burchell [2038], South Africa K000366754 Unknown type material
    Burchell [1842], South Africa K000366756
    Burchell [1917], South Africa K000366755 Unknown type material
    Bidgood, S. [6052], Tanzania K000468373

    First published in Prodr. Pl. Cap.: 19 (1794)

    Accepted by

    • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa: an annotated checklist. Strelitzia 14.: i-vi, 1-1231. National Botanical Institute, Pretoria.
    • Govaerts, R. (1995). World Checklist of Seed Plants 1(1, 2): 1-483, 1-529. MIM, Deurne.
    • 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
    • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa: an annotated checklist. Strelitzia 14.: i-vi, 1-1231. 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: 23 (1965).
    • Thunb., Prodr.: 19 (1794).

    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