1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida wildii Melderis

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

    [FZ]

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

    Habit
    Annual, 35-55 cm. high, delicate.
    Culms
    Culms erect, slender, simple or branched, glabrous, smooth, 3-4-noded; nodes glabrous.
    Leaf sheaths
    Leaf-sheath glabrous, slightly keeled, tinged with purple towards the base.
    Ligules
    Ligule a short ciliate rim; auricles short-ciliate; collar glabrous.
    Leaf lamina
    Leaf-laminae up to 22 x 0·1-0·15 cm., convolute, minutely hirtellous above, glabrous, smooth beneath.
    Inflorescences
    Panicle 20-22 cm. long, lax, effuse; axis slightly scaberulous; branches up to 6 cm. long (excluding spikelets), simple or 2-nate, naked for most of their length, scaberulous, with a dark coloured glandular patch in the axils, ± spreading or the lower ones sometimes reflexed, bearing 1-3 spikelets towards the ends.
    Spikelets
    Spikelets pallid or tinged with purple.
    Glume
    Glumes unequal, the lower longer than the upper, hyaline-membranous, 1-nerved, keeled, slightly scaberulous on the keel, otherwise glabrous; the inferior 7-9 mm. long, acute; the superior 6-7·5 mm. long, erose and obtuse at the apex.
    Lemma
    Lemma 10·5-11 mm. long, exserted from the glumes, keeled, often mottled with purple, glabrous in the lower part, scaberulous on the keel and lateral nerves towards the apex; callus 0·5 mm. long, short-barbate, with a minute, obtuse, glabrous tip; column absent; awns unequal, scabrous, the central 1·1-1·6 cm. long, the lateral ones 0·6-1·3 cm. long; articulation absent.
    [GB]
    Habit
    Annual. Culms erect; 35-55 cm long; 3-4 -noded. Culm-internodes distally glabrous. Ligule a fringe of hairs. Leaf-blades convolute; 10-22 cm long; 1-1.5 mm wide. Leaf-blade surface pubescent; hairy adaxially.
    Inflorescences
    Inflorescence a panicle. Panicle open; elliptic; effuse; 20-22 cm long. Primary panicle branches spreading, or reflexed; 1-2 -nate; 3-6 cm long; bearing 1-3 fertile spikelets on each lower branch. Panicle branches glandular (in axils); scaberulous. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 10.5-11 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.5 mm long; pilose; obtuse.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 10.5-11 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.5 mm long; pilose; obtuse.
    Glume
    Glumes persistent; similar; shorter than spikelet; thinner than fertile lemma. Lower glume lanceolate; 7-9 mm long; 1.2 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 6-7.5 mm long; 0.6-0.7 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scaberulous. Upper glume apex erose; obtuse.
    Florets
    Fertile lemma elliptic; subterete; 10.5-11 mm long; coriaceous; keeled; 3 -veined. Lemma surface scaberulous; rough above. Lemma margins convolute; covering most of palea. Lemma apex acute; awned; 3 -awned. Principal lemma awn 3-branched; with 11-16 mm long limb; persistent. Lateral lemma awns 6-13 mm long; shorter than principal. Palea 0.1 length of lemma; without keels.
    Flowers
    Anthers 3.
    Distribution
    Africa: south.
    Reference
    Aristideae. FZ.

    Images

    Distribution

    Native to:

    Botswana

    Aristida wildii Melderis appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Wild, H. [6948], Botswana K000058118 isotype
    Smith, P.A. [3397], Botswana K000058116
    Smith, P.A. [2951], Botswana K000058117

    First published in Bol. Soc. Brot., sér. 2, 44: 283 (1970)

    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.
    • 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.

    Literature

    Kew Backbone Distributions
    • Launert, E. (1971). Flora Zambesiaca 10(1): 1-152. Royal Botanic Gardens, Kew.

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    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