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

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

    [GB]
    Habit
    Perennial; caespitose; clumped loosely. Culms erect; 60-153 cm long. Culm-internodes glaucous; smooth; distally glabrous. Culm-nodes glabrous. Lateral branches sparse. Leaf-sheaths longer than adjacent culm internode; smooth; glabrous on surface. Leaf-sheath oral hairs lacking, or ciliate; 1-2 mm long. Ligule a fringe of hairs; 0.5-1 mm long. Collar glabrous, or pubescent. Leaf-blades straight, or flexuous; 20-40 cm long; 2-4.5 mm wide. Leaf-blade surface scabrous; rough adaxially; glabrous, or pubescent; hairy adaxially.
    Inflorescences
    Inflorescence a panicle. Panicle contracted; lanceolate; continuous, or interrupted; 15-37 cm long; 2-4 cm wide. Panicle branches scaberulous, or scabrous. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 10-25 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; pubescent; acute.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 10-25 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; pubescent; acute.
    Glume
    Glumes deciduous; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 10-25 mm long; 1.3-1.7 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume surface smooth to scabrous. Lower glume apex acute, or acuminate. Upper glume lanceolate; 7.6-15 mm long; 1.1-1.4 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex emarginate to acuminate.
    Florets
    Fertile lemma lanceolate; subterete; 5.4-13.5 mm long; coriaceous; pallid, or light brown; mottled with last colour; without keel; 3 -veined. Lemma surface smooth, or scabrous; rough above. Lemma margins involute; covering most of palea; scabrous. Lemma apex acute; awned; 3 -awned. Principal lemma awn flat below; with 14-48 mm long limb; without a column; persistent. Lateral lemma awns 14-37 mm long; shorter than principal. Palea 0.2 length of lemma; without keels.
    Flowers
    Anthers 3.
    Fruits
    Caryopsis with adherent pericarp; sulcate on hilar side; 5-8.3 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 pruinosa Domin appears in other Kew resources:

    First published in Biblioth. Bot. 20(85): 345 (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