1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida caput-medusae Domin

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

    [GB]
    Habit
    Perennial; caespitose. Culms 33-85 cm long. Culm-internodes smooth, or scaberulous; distally glabrous. Culm-nodes glabrous. Lateral branches ample. Leaf-sheaths smooth, or scaberulous; glabrous on surface. Leaf-sheath oral hairs lacking, or ciliate; 0.5-2.5 mm long. Ligule a fringe of hairs; 0.5 mm long. Leaf-blades involute; 2-4 cm long; 0.5-1 mm wide. Leaf-blade surface scabrous; rough adaxially, or on both sides.
    Inflorescences
    Inflorescence a panicle. Panicle contracted; lanceolate, or ovate; 3.9-8 cm long; 1-5 cm wide. Primary panicle branches 4-8 cm long; bearing spikelets almost to the base. Panicle branches scaberulous, or scabrous; with prominent pulvini. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 6-9.5 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; 6-9.5 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; shorter than spikelet; thinner than fertile lemma. Lower glume lanceolate; 2.7-5 mm long; 0.66 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume surface asperulous, or scabrous. Lower glume apex obtuse to acuminate. Upper glume lanceolate; 4-8 mm long; 0.66-0.8 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume surface smooth to scabrous. Upper glume apex obtuse to acuminate.
    Florets
    Fertile lemma lanceolate; subterete; 6-9.5 mm long; coriaceous; pallid, or light brown; concolorous, or mottled with last colour; without keel; 3 -veined. Lemma surface smooth, or scabrous; rough generally. Lemma margins convolute; covering most of palea. Lemma apex acute; awned; 3 -awned. Principal lemma awn spreading; flat below; with 7-13 mm long limb; without a column; persistent. Lateral lemma awns spreading as much as principal; 6-12 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; 4-6.1 mm long. Hilum linear; 0.4 length of caryopsis.
    Distribution
    Australasia: Australia.
    Reference
    Aristideae. Simon 1993.

    Images

    Distribution

    Native to:

    New South Wales, Queensland

    Aristida caput-medusae Domin appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Oct 2, 1967 Beckler, H. [s.n.], Australia K000906024 syntype
    O'Shanesy [s.n.], Australia K000906023 holotype

    First published in Biblioth. Bot. 20(85): 344 (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

    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