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

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

    [GB]
    Habit
    Annual. Culms geniculately ascending; 25-50 cm long; 3-4 -noded. Culm-internodes distally glabrous. Ligule a fringe of hairs. Leaf-blades 5-16 cm long; 1-1.7 mm wide. Leaf-blade surface ribbed; pubescent; hairy adaxially.
    Inflorescences
    Inflorescence a panicle. Panicle open; elliptic; effuse; 10-20 cm long. Primary panicle branches 1-2 -nate; branching divaricately; 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; 8.5-10 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 1 mm long; pubescent; obtuse.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 8.5-10 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 1 mm long; pubescent; obtuse.
    Glume
    Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 6-7.5 mm long; 0.7-0.8 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex dentate; 2 -fid; obtuse; mucronate. Upper glume lanceolate; 8.5-10 mm long; 1.1-1.2 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex dentate; 2 -fid; mucronate.
    Florets
    Fertile lemma elliptic; subterete; 8 mm long; coriaceous; without keel; 3 -veined. Lemma margins involute; covering most of palea. Lemma apex acute; awned; 3 -awned. Principal lemma awn 3-branched; with 10-15 mm long limb; persistent. Lateral lemma awns 10-15 mm long; subequal to principal. Palea 0.1 length of lemma; without keels.
    Flowers
    Anthers 3.
    Distribution
    Africa: southern tropical.
    Reference
    Aristideae. FZ.
    [FZ]

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

    Habit
    Annual, up to 50 cm. high, delicate.
    Culms
    Culms erect, ascending, usually branched from the lower nodes, glabrous, smooth, 3-4-noded; nodes glabrous and smooth.
    Leaf sheaths
    Leaf-sheaths rather lax, keeled; the lower ones with some scattered long, delicate hairs; the upper ones glabrous and smooth.
    Ligules
    Ligule densely short-ciliolate; auricles ciliolate, often with a few long hairs; collar glabrous.
    Leaf lamina
    Leaf-laminae up to 16 x 0·17 cm., densely ribbed, with marginal nerves and midrib more prominent, shortly pubescent on the nerves above, glabrous and smooth beneath.
    Inflorescences
    Panicle up to 20 cm. long, effuse; axis terete and glabrous, smooth in the lower part, subangular, scabrid in the upper; branches 1-2 at the nodes, subangular, slightly scabrid, divaricate, naked in the lower part, bearing 1-3 spikelets, with dark, shortly pubescent glandular patches in the axils.
    Spikelets
    Spikelets delicate, greenish or purplish-brown, the lateral ones divaricate, on short pedicels (up to 1·5 mm. long).
    Glume
    Glumes broad, unequal, 2-fid at the apex, 1-nerved, keeled; the inferior 6-7·5 mm. long, scabrid on the keel, otherwise glabrous and smooth, rarely slightly minutely pubescent towards the apex, with obtuse lobes at the apex with a very short awn (up to 0·8 mm. long) from a shallow sinus, exceeding the lobes; the superior 8·5-10 mm. long, nearly smooth on the keel, with acute lobes at the apex and with a very short awn (up to 0·5 mm. long) from a deep sinus, usually not exceeding the lobes.
    Lemma
    Lemma c. 8 mm. long, keeled, glabrous and smooth, sometimes mottled with purple, deeply grooved ventrally, with enrolled margins; callus c. 1 mm. long, subobtuse, densely pubescent; column absent; awns subequal, 1-1·5 cm. long, slightly dilated towards the base, scabrid; articulation absent.

    Images

    Distribution

    Native to:

    Zimbabwe

    Aristida brainii Melderis appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Brain, C. K. [8866], Zimbabwe K000366809

    First published in Bol. Soc. Brot., sér. 2, 44: 279 (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.
    • 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