1. Family: Poaceae Barnhart
    1. Genus: Plagiosetum Benth.
      1. Plagiosetum refractum (F.Muell.) Benth.

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

    [GB]
    Habit
    Annual. Culms erect, or decumbent; 20-50 cm long; rooting from lower nodes. Ligule a fringe of hairs; 1 mm long. Leaf-blades convolute; 2-10 cm long; 2-5 mm wide. Leaf-blade surface scabrous; rough on both sides. Leaf-blade apex acuminate.
    Inflorescences
    Inflorescence composed of racemes. Racemes 5-15; borne along a central axis; deflexed, or spreading; cuneate; unilateral; 1-3 cm long; bearing 1 spikelet, or few fertile spikelets; bearing 1-2 fertile spikelets on each. Central inflorescence axis 10-20 cm long; flattened; tip filiform. Rhachis deciduous from axis; flattened; terminating in a barren extension; extension a fan of bristles. Raceme-bases linear; 1-8 mm long. Spikelets subtended by an involucre. Fertile spikelets pedicelled; 1 in the cluster. Involucre composed of bristles; 7-15 mm long. Involucral bristles deciduous with the fertile spikelets; numerous; 3-4 per spikelet. Pedicels oblong; 1.5-4 mm long.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; acute; 6-7.5 mm long; falling entire; deciduous with accessory branch structures.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; acute; 6-7.5 mm long; falling entire; deciduous with accessory branch structures.
    Glume
    Glumes similar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 0.5-0.66 length of spikelet; membranous; without keels; 5-7 -veined. Lower glume apex acute, or acuminate. Upper glume lanceolate; membranous; without keels; 15-19 -veined. Upper glume apex acute.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret similar to upper glume; lanceolate; 1 length of spikelet; membranous; 15-19 -veined; acute. Fertile lemma elliptic; dorsally compressed; 5 mm long; indurate; without keel. Lemma surface rugulose. Lemma margins involute. Lemma apex acute.
    Flowers
    Anthers 3; 2.25 mm long.
    Fruits
    Caryopsis with adherent pericarp. Embryo 0.5-0.66 length of caryopsis. Hilum elliptic.
    Distribution
    Australasia: Australia.
    Reference
    Paniceae. Vickery.

    Images

    Distribution

    Native to:

    New South Wales, Northern Territory, Queensland, South Australia, Western Australia

    Plagiosetum refractum (F.Muell.) Benth. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Giles, W.E.P. [s.n.], Northern Territory K001056003
    Giles, W.E.P [s.n.], Australia K001056004

    First published in Hooker's Icon. Pl. 13: 33 (1877)

    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.

    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 2019. 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 2019. 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