1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida contorta F.Muell.

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

    [GB]
    Habit
    Annual, or perennial; short-lived; caespitose. Culms erect, or geniculately ascending; zigzag; 12-44 cm long; 2-4 -noded. Culm-internodes antrorsely scabrous; distally glabrous. Lateral branches ample. Leaf-sheaths smooth, or scaberulous; glabrous on surface, or pilose. Leaf-sheath oral hairs ciliate; 3 mm long. Ligule a fringe of hairs; 0.3-0.5 mm long. Leaf-blades flexuous; filiform; involute; 3-10 cm long; 1 mm wide. Leaf-blade surface smooth, or scaberulous; glabrous, or pilose; hairy adaxially.
    Inflorescences
    Inflorescence a panicle. Panicle open; elliptic; 9-26 cm long; 4-9 cm wide. Primary panicle branches 2-3 -nate; 1-2.5 cm long. Panicle branches scaberulous, or scabrous. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; compressed slightly; 12-30 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 1-2 mm long; pubescent; pungent. Floret callus hairs 0.1-0.3 mm long.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; compressed slightly; 12-30 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 1-2 mm long; pubescent; pungent. Floret callus hairs 0.1-0.3 mm long.
    Glume
    Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 7.4-14.2 mm long; 0.5-0.6 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume surface asperulous, or scabrous. Lower glume apex acute, or acuminate. Upper glume lanceolate; 12-30 mm long; 2.5-4 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume surface asperulous, or scabrous. Upper glume apex emarginate, or acute, or acuminate; muticous.
    Florets
    Fertile lemma lanceolate; laterally compressed; 4.9-7 mm long; coriaceous; pallid, or light brown; without keel; 3 -veined. Lemma surface scabrous; rough above. Lemma margins convolute; covering most of palea. Lemma apex acute; awned; 3 -awned. Principal lemma awn 3-branched; spreading; with 18-95 mm long limb; with twisted column; deciduous; abscissing from top of lemma. Column of lemma awn 7-26 mm long. Lateral lemma awns spreading as much as principal; 16-92 mm long; subequal to principal. Palea 0.2 length of lemma; without keels.
    Flowers
    Anthers 3; 1.3 mm long.
    Fruits
    Caryopsis with adherent pericarp; 3-4.5 mm long. Hilum linear; 0.5-0.6 length of caryopsis.
    Distribution
    Australasia: Australia.
    Reference
    Aristideae. Simon 1993.

    Images

    Distribution

    Native to:

    New South Wales, Northern Territory, Queensland, South Australia, Victoria, Western Australia

    Aristida contorta F.Muell. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Feb 22, 1983 Gaudichaud-Beaupré, C. [s.n.], Western Australia K000906021 isotype
    Feb 22, 1983 Moore, S.le M. [s.n.], Western Australia K000906022
    Koch, M. [95], South Australia K000906008
    Koch, M. [s.n.], South Australia K000906009
    Koch, M. [s.n.], South Australia K000906010
    Mueller, F.J.H.von [s.n.], Australia K000906011
    Mueller, F.J.H.von [s.n.], Australia K000906013
    Mueller, F.J.H.von [s.n.], Australia K000906015
    Mueller, F.J.H.von [s.n.], Australia K000906020
    Mueller, F J.H.von [s.n.], Australia K000906018
    s.coll. [s.n.], Australia K000906019
    Hillier, J. [46], South Australia K000906007 Unknown type material
    Monger [s.n.], Australia K000906012
    Gosse, H. [116], Australia K000906014
    Gosse, H. [55], Australia K000906016
    Gosse, H. [114], South Australia K000906017

    First published in Trans. & Proc. Victorian Inst. Advancem. Sci. 1: 44 (1855)

    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

    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