1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida thompsonii B.K.Simon

        This species is accepted, and its native range is N. Central Queensland.

    [GB]
    Habit
    Perennial; caespitose. Culms erect; 20-40 cm long; 1-1.5 mm diam.; 3-4 -noded. Culm-internodes glaucous; smooth; distally glabrous. Culm-nodes glabrous. Lateral branches sparse. Leaves mostly basal. Leaf-sheaths longer than adjacent culm internode; striately veined; smooth; glabrous on surface. Ligule a fringe of hairs. Collar glabrous. Leaf-blades involute; 10-25 cm long; 0.5-0.75 mm wide; stiff; glaucous. Leaf-blade surface scaberulous; glabrous.
    Inflorescences
    Inflorescence a panicle. Panicle contracted; linear; 6-10 cm long; 0.3 cm wide. Primary panicle branches appressed; 1-2 cm long; bearing spikelets almost to the base. Panicle branches scaberulous; with insignificant pulvini. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 6-7 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.5 mm long; pubescent; obtuse. Floret callus hairs 0.7 mm long.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 6-7 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.5 mm long; pubescent; obtuse. Floret callus hairs 0.7 mm long.
    Glume
    Glumes lower deciduous, upper persistent; similar; reaching apex of florets; thinner than fertile lemma. Lower glume lanceolate; 5.5-6 mm long; 0.9 length of upper glume; membranous; 1 -veined. Lower glume lateral veins absent. Lower glume surface asperulous. Lower glume apex acute. Upper glume lanceolate; 6-7 mm long; membranous; 1 -veined. Upper glume lateral veins absent. Upper glume surface asperulous. Upper glume apex acute.
    Florets
    Fertile lemma linear; subterete; 5.5-6 mm long; coriaceous; without keel; 5 -veined. Lemma margins convolute; covering most of palea. Lemma apex awned; 3 -awned. Principal lemma awn with 3.5-4 mm long limb. Lateral lemma awns 0.5-1 mm long; shorter than principal.
    Flowers
    Anthers 3.
    Fruits
    Caryopsis with adherent pericarp; linear; 4.5 mm long. Embryo 0.25 length of caryopsis.
    Distribution
    Australasia: Australia.
    Reference
    Aristideae. Simon 1995.

    Distribution

    Native to:

    Queensland

    Aristida thompsonii B.K.Simon appears in other Kew resources:

    First published in Austrobaileya 4: 145 (1994)

    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.
    • Mallett, K. (ed.) (2005). Flora of Australia 44B: 1-486. Australian Government Publishing Service, Canberra.

    Literature

    Kew Backbone Distributions
    • Mallett, K. (ed.) (2005). Flora of Australia 44B: 1-486. Australian Government Publishing Service, Canberra.

    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