1. Family: Poaceae Barnhart
    1. Genus: Tetrarrhena R.Br.
      1. Tetrarrhena juncea R.Br.

        This species is accepted, and is native to Australasia..

    [GB]
    Habit
    Perennial; mat forming. Stolons absent, or present. Culms rambling; 50-100 cm long; wiry. Ligule an eciliate membrane; 0.1-0.5 mm long. Leaf-blades flat, or involute; 3-7 cm long; 1-3 mm wide.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; 2-5 cm long. Spikelets solitary. Fertile spikelets pedicelled. Pedicels oblong.
    Spikelets
    Spikelets comprising 2 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 6 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 2 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 6 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes persistent; dissimilar; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 1.5 mm long; 0.75 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume margins ciliolate. Lower glume apex truncate. Upper glume ovate; 2 mm long; 0.5 length of adjacent fertile lemma; membranous; without keels; 5 -veined. Upper glume apex emarginate.
    Florets
    Basal sterile florets similar; barren; without significant palea; attached to and deciduous with the fertile. Lemma of lower sterile floret oblong; 5 mm long; 1 length of fertile lemma; coriaceous; 1-keeled; 7 -veined; emarginate. Lemma of upper sterile floret oblong; 5 mm long; 1.1 length of lower sterile floret; coriaceous; emarginate. Fertile lemma ovate; 5 mm long; cartilaginous; keeled; 7 -veined. Lemma apex acute. Palea 0.75 length of lemma; 1 -veined; 1-keeled.
    Flowers
    Lodicules 2; membranous. Anthers 4; 2 mm long.
    Distribution
    Australasia: Australia.
    Reference
    Ehrharteae. Tothill.

    Images

    Distribution

    Native to:

    New South Wales, Queensland, South Australia, Tasmania, Victoria

    Tetrarrhena juncea R.Br. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Gunn [987] Ehrharta juncea K000848996 lectotype
    Gunn [s.n.], Australia Ehrharta juncea K000848998
    Brown, R. [6168], Australia Ehrharta juncea K000848997 lectotype
    Gunn, R. [28], Australia Ehrharta juncea K000848999
    Mueller, F.J.H.v. [s.n.], Victoria Ehrharta juncea K000587399
    s.coll. [s.n.], Victoria Ehrharta juncea K000849000

    First published in Prodr. Fl. Nov. Holland.: 210 (1810)

    Not 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. [Cited as Ehrharta juncea.]

    Literature

    Kew Backbone Distributions
    • Wilson, A. (ed.) (2009). Flora of Australia 44A: 1-410. 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