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

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

    [GB]
    Habit
    Perennial; caespitose. Culms erect; 50-100 cm long; 1-2 mm diam. Culm-internodes distally glabrous. Culm-nodes glabrous. Lateral branches lacking. Leaf-sheaths longer than adjacent culm internode; smooth; glabrous on surface. Leaf-sheath oral hairs ciliate. Ligule a fringe of hairs. Leaf-blades flat, or convolute; 10-35 cm long; 1-1.5 mm wide. Leaf-blade surface scabrous; rough adaxially. Leaf-blade margins cartilaginous. Leaf-blade apex acuminate.
    Inflorescences
    Inflorescence a panicle. Panicle open; ovate; effuse; 25-50 cm long; 10-20 cm wide; with spikelets clustered towards branch tips. Primary panicle branches 2-3 -nate. Panicle axis scabrous. Panicle branches flexuous; bearded in axils. Spikelets solitary. Fertile spikelets pedicelled. Pedicels scaberulous.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 11.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 1 mm long; pubescent; acute.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 11.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 1 mm long; pubescent; acute.
    Glume
    Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 11.5 mm long; 1.1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acuminate; awned; 1 -awned. Lower glume awn 2 mm long. Upper glume lanceolate; 10.5 mm long; 1.2 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex dentate; 2 -fid; awned; 1 -awned. Upper glume awn 2 mm long.
    Florets
    Fertile lemma linear, or lanceolate; subterete; 9 mm long; coriaceous; without keel. Lemma surface punctate. Lemma margins convolute; covering most of palea. Lemma apex acute; awned; 3 -awned. Principal lemma awn 3-branched; with 20 mm long limb; without a column, or with a straight or slightly twisted column; persistent. Column of lemma awn 0-1 mm long. Lateral lemma awns 13 mm long; shorter than principal. Palea absent or minute.
    Flowers
    Anthers 3.
    Distribution
    Asia-tropical: Indo-China.
    Reference
    Aristideae. Henrard 2001.

    Distribution

    Native to:

    Vietnam

    Aristida annamensis Henrard appears in other Kew resources:

    First published in Meded. Rijks-Herb. 54: 28 (1926)

    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.

    Sources

    GrassBase - The Online World Grass Flora
    http://creativecommons.org/licenses/by-nc-sa/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