1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida perniciosa Domin

        This species is accepted, and its native range is N. & NE. Australia.

    [GB]
    Habit
    Perennial; caespitose; clumped densely. Culms erect; 40-137 cm long; 1-2 -noded. Culm-internodes smooth; distally glabrous. Lateral branches lacking, or sparse. Leaf-sheaths smooth, or scaberulous; glabrous on surface, or pilose. Leaf-sheath oral hairs ciliate; 0.5-2 mm long. Ligule a fringe of hairs; 0.3 mm long. Leaf-blades curled, or flexuous; conduplicate, or involute; 10-20 cm long; 2-3 mm wide. Leaf-blade surface scaberulous.
    Inflorescences
    Inflorescence a panicle. Panicle contracted, or spiciform; linear; 15-39 cm long; 1-1.5 cm wide. Primary panicle branches 2 -nate; bearing spikelets almost to the base. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 11-18.3 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 0.8-1.1 mm long; pubescent; acute.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 11-18.3 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 0.8-1.1 mm long; pubescent; acute.
    Glume
    Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 11-16 mm long; 0.9-1 length of upper glume; membranous; 1-keeled; 5 -veined. Lower glume primary vein scabrous. Lower glume apex acute, or acuminate; awned; 1 -awned. Lower glume awn 8 mm long. Upper glume lanceolate; 11-18.3 mm long; 1.3-1.5 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume surface glabrous, or pubescent. Upper glume apex acute, or acuminate; awned; 1 -awned. Upper glume awn 8 mm long.
    Florets
    Fertile lemma lanceolate; subterete; 7-14 mm long; coriaceous; pallid and light brown; without keel; 3 -veined. Lemma surface smooth, or scaberulous; rough above. Lemma margins involute; covering most of palea; without distinctive roughness. Lemma apex acute; awned; 3 -awned. Principal lemma awn 3-branched; with 16-34 mm long limb; with twisted column; persistent. Column of lemma awn 5-10 mm long. Lateral lemma awns 13-30 mm long; shorter than principal. Palea 0.2 length of lemma; without keels.
    Flowers
    Anthers 3; 0.9-1.3 mm long.
    Fruits
    Caryopsis with adherent pericarp; sulcate on hilar side; 5.4-7.6 mm long. Hilum linear; 0.4 length of caryopsis.
    Distribution
    Australasia: Australia.
    Reference
    Aristideae. Simon 1993.

    Distribution

    Native to:

    Northern Territory, Queensland, Western Australia

    Aristida perniciosa Domin appears in other Kew resources:

    First published in Biblioth. Bot. 20(85): 340 (1915)

    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