1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida rufescens Steud.

        This species is accepted, and its native range is Mayotte, N. Madagascar.

    [GB]
    Habit
    Perennial; caespitose. Rhizomes short. Culms erect; 70-100 cm long. Culm-nodes swollen. Lateral branches lacking, or sparse. Leaf-sheaths hirsute. Leaf-sheath oral hairs ciliate. Ligule a fringe of hairs. Leaf-blades convolute; 30-40 cm long; 3 mm wide; coriaceous; stiff. Leaf-blade surface scabrous; rough adaxially; pubescent; hairy adaxially. Leaf-blade margins scabrous. Leaf-blade apex filiform.
    Inflorescences
    Inflorescence a panicle. Panicle open; linear to elliptic; dense; 12-25 cm long. Primary panicle branches 2-6 cm long; bearing spikelets almost to the base. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 8.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.5 mm long; pilose; acute.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 8.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.5 mm long; pilose; acute.
    Glume
    Glumes similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 7.5 mm long; 0.9 length of upper glume; membranous; 1-keeled; 1-3 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent, or obscure. Lower glume surface pubescent. Lower glume apex attenuate; awned; 1 -awned. Lower glume awn 1-2 mm long. Upper glume lanceolate; 8.5 mm long; 2 length of adjacent fertile lemma; membranous; 1-keeled. Upper glume primary vein scabrous. Upper glume apex attenuate; awned; 1 -awned. Upper glume awn 1-2 mm long.
    Florets
    Fertile lemma lanceolate; subterete; 4.5 mm long; coriaceous; without keel; 3 -veined. Lemma midvein scabrous. Lemma margins convolute; covering most of palea. Lemma apex awned; 3 -awned. Principal lemma awn 3-branched; with 13-14 mm long limb; with a straight or slightly twisted column. Column of lemma awn 2 mm long. Lateral lemma awns 13-14 mm long; subequal to principal.
    Flowers
    Anthers 3.
    Distribution
    Africa: western Indian ocean.
    Reference
    Aristideae. Henrard 1994.

    Images

    Distribution

    Native to:

    Comoros, Madagascar

    Aristida rufescens Steud. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Baron, R. [4279], Madagascar K000366706

    First published in Syn. Pl. Glumac. 1: 421 (1854)

    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.
    • Bosser, J. (1969). Gramiées des pasturages et des cultures a Madagascar: 1-440. ORSTOM, Paris.

    Literature

    Kew Backbone Distributions
    • Bosser, J. (1969). Gramiées des pasturages et des cultures a Madagascar: 1-440. ORSTOM, Paris.
    • Voeltzkow, A. (1917). Flora und Fauna der Comoren: 428-480.

    Sources

    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