1. Family: Poaceae Barnhart
    1. Genus: Heterachne Benth.
      1. Heterachne abortiva (R.Br.) Druce

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

    [GB]
    Habit
    Annual. Culms erect, or decumbent; 10-35 cm long; 3-5 -noded. Ligule a fringe of hairs. Leaf-blades convolute; 5-16 cm long; 1-2.5 mm wide; stiff. Leaf-blade surface ribbed. Leaf-blade apex attenuate.
    Inflorescences
    Inflorescence a panicle. Panicle spiciform; oblong; continuous, or interrupted; 1.5-5 cm long; 1-2 cm wide. Spikelets solitary. Fertile spikelets sessile, or pedicelled. Pedicels oblong; 0.5 mm long; ciliate.
    Spikelets
    Spikelets comprising 1-2 fertile florets; with diminished florets at the apex. Spikelets oblong, or ovate; laterally compressed; compressed strongly; 3-10 mm long; breaking up at maturity; disarticulating above glumes but not between florets. Rhachilla internodes definite; zig-zag.
    Fertile
    Spikelets comprising 1-2 fertile florets; with diminished florets at the apex. Spikelets oblong, or ovate; laterally compressed; compressed strongly; 3-10 mm long; breaking up at maturity; disarticulating above glumes but not between florets. Rhachilla internodes definite; zig-zag.
    Glume
    Glumes deciduous; similar; shorter than spikelet. Lower glume ovate; 1-1.5 mm long; 0.6 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 1.8-2.5 mm long; 0.7 length of adjacent fertile lemma; 1-keeled; 3 -veined. Upper glume apex acute.
    Florets
    Fertile lemma ovate; 2.6-3.5 mm long; membranous; keeled; winged on keel; 3 -veined. Lemma midvein ciliolate; hairy above. Lemma apex obtuse. Palea bowed outwards; 0.75 length of lemma. Palea keels winged; conspicuously winged; ciliolate. Apical sterile florets 4-22 in number; barren; in a clump (fan-like); oblong; 2.5-3 mm long. Apical sterile lemmas winged on keel.
    Flowers
    Lodicules 2; cuneate; fleshy. Anthers 3; 0.3-0.5 mm long.
    Fruits
    Caryopsis with adherent pericarp; ellipsoid; 1.3-1.5 mm long.
    Distribution
    Australasia: Australia.
    Reference
    Eragrostideae. WDC.

    Images

    Distribution

    Native to:

    Northern Territory, Queensland, Western Australia

    Heterachne abortiva (R.Br.) Druce appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    May 1, 1955 Brown, R. [6268], Australia K000907208

    First published in Rep. Bot. Soc. Exch. Club Brit. Isles 1916: 627 (1917)

    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