1. Family: Poaceae Barnhart
    1. Genus: Dichelachne Endl.
      1. Dichelachne rara (R.Br.) Vickery

        This species is accepted, and its native range is Lesser Sunda Islands to E. & S. Australia.

    [GB]
    Habit
    Perennial; caespitose. Culms erect; 60-130 cm long; wiry. Culm-internodes smooth, or scaberulous; distally glabrous, or pubescent. Lateral branches lacking. Ligule an eciliate membrane; 1-3 mm long. Leaf-blades 10-17(-25) cm long; 1-4.5 mm wide.
    Inflorescences
    Inflorescence a panicle. Peduncle 25-55 cm long. Panicle open; oblong; dense; 10-23 cm long; 4-8 cm wide. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; laterally compressed; 4-8.25 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; pubescent. Floret callus hairs 0.5-1.75 mm long.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; laterally compressed; 4-8.25 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; pubescent. Floret callus hairs 0.5-1.75 mm long.
    Glume
    Glumes persistent; similar; reaching apex of florets; thinner than fertile lemma; gaping. Lower glume lanceolate; 3.25-8.25 mm long; 1 length of upper glume; membranous; 1-keeled; keeled above; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume apex acute to attenuate. Upper glume lanceolate; 3.25-8.25 mm long; 1 length of adjacent fertile lemma; membranous; 1-keeled; keeled above; 1 -veined. Upper glume primary vein scaberulous. Upper glume lateral veins absent. Upper glume apex acute to attenuate.
    Florets
    Fertile lemma lanceolate; 4-8 mm long; cartilaginous; keeled; lightly keeled; 5 -veined. Lemma surface asperulous. Lemma margins involute. Lemma apex obtuse (easily splitting); awned; 1 -awned. Principal lemma awn subapical, or dorsal; arising 0.75-0.9 way up back of lemma (0.3-2mm below apex); flexuous; 10-25 mm long overall; 2-4 length of lemma. Palea 3-6.5 mm long; 0.75 length of lemma; 2-4 -veined. Palea keels approximate.
    Flowers
    Lodicules 2; 0.5-0.75 mm long; glabrous. Anthers 1 (rarely), or 3; 0.75-2.75 mm long; yellow, or purple.
    Fruits
    Caryopsis with adherent pericarp; sulcate on hilar side; 2.5-3.25 mm long; apex rostrate. Hilum punctiform. Endosperm liquid.
    Distribution
    Asia-tropical: Malesia and Papuasia. Australasia: Australia and New Zealand.
    Reference
    Aveneae. Veldkamp.

    Images

    Distribution

    Native to:

    Lesser Sunda Is., New Guinea, New South Wales, Queensland, South Australia, Tasmania, Victoria, Western Australia

    Introduced into:

    New Zealand North, New Zealand South

    Dichelachne rara (R.Br.) Vickery appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Brown, R. [6212], Australia K000913397 Unknown type material
    Stuart, C. [s.n.], Tasmania K000913398
    Woolls, W. [s.n.], New South Wales K000913428 holotype
    Australia Agrostis rara K000484085

    First published in Contr. New South Wales Natl. Herb. 1: 337 (1951)

    Accepted by

    • Edgar, E & Connor, H.E. (2010). Flora of New Zealand, ed. 2, 5: 1-650. R.E.Owen, Government Printer, Wellington.
    • Wilson, A. (ed.) (2009). Flora of Australia 44A: 1-410. Australian Government Publishing Service, Canberra.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions
    • Edgar, E & Connor, H.E. (2010). Flora of New Zealand, ed. 2, 5: 1-650. R.E.Owen, Government Printer, Wellington.
    • Wilson, A. (ed.) (2009). Flora of Australia 44A: 1-410. Australian Government Publishing Service, Canberra.
    • Henty, E.E. (1969). A manual of the grasses of New Guinea: 1-215. Division of Botany, Dpt. of Forests, LAE, New Guinea.

    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