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  1. Family: Poaceae Barnhart
    1. Genus: Urochloa P.Beauv.
      1. Urochloa occidentalis (C.A.Gardner & C.E.Hubb.) B.K.Simon

        This species is accepted, and its native range is NW. & N. Western Australia to NW. Northern Territory.

    [GB]
    Habit
    Annual; caespitose; clumped loosely. Culms decumbent; slender; 10-30 cm long; 3-6 -noded; without nodal roots, or rooting from lower nodes. Culm-internodes smooth; distally glabrous. Culm-nodes pubescent, or bearded. Lateral branches lacking, or sparse. Leaf-sheaths mostly shorter than adjacent culm internode; glabrous on surface, or pilose; with tubercle-based hairs; outer margin hairy. Ligule a ciliolate membrane; truncate. Leaf-blade base simple, or broadly rounded. Leaf-blades linear, or lanceolate; 1.5-5.5 cm long; 4-9 mm wide. Leaf-blade surface glabrous, or puberulous. Leaf-blade margins cartilaginous; scaberulous; tuberculate-ciliate; hairy at base. Leaf-blade apex acute.
    Inflorescences
    Inflorescence composed of racemes. Racemes 3-5; borne along a central axis; erect; unilateral; 3-5 cm long. Central inflorescence axis 2-4 cm long. Rhachis angular; scaberulous on margins. Spikelets in pairs. Fertile spikelets pedicelled. Pedicels unequal; 0.5 mm long, or 1-2 mm long; glabrous, or ciliate; hairy at tip.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; compressed strongly; plano-convex; acute; 3-3.8 mm long; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; compressed strongly; plano-convex; acute; 3-3.8 mm long; falling entire.
    Glume
    Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 0.5-0.8 mm long; 0.1-0.2 length of spikelet; hyaline; without keels; 1-3 -veined. Lower glume lateral veins absent, or obscure. Lower glume apex obtuse. Upper glume ovate; 1.3-1.5 length of adjacent fertile lemma; 1 length of spikelet; membranous; without keels; 7 -veined. Upper glume apex obtuse.
    Florets
    Basal sterile florets male, or barren; with palea. Lemma of lower sterile floret similar to upper glume; ovate; 1 length of spikelet; membranous; 5-7 -veined; obtuse. Palea of lower sterile floret 1 length of lemma. Fertile lemma elliptic; gibbous; 2.3-2.5 mm long; indurate; without keel. Lemma surface rugulose. Lemma margins involute. Lemma apex obtuse; mucronate. Principal lemma awn 0.2-0.4 mm long overall. Palea involute; indurate; without keels. Palea surface rugose.
    Flowers
    Anthers 3; 0.7-1.5 mm long.
    Fruits
    Caryopsis with adherent pericarp; ellipsoid, or oblong; 1.5 mm long.
    Distribution
    Australasia: Australia.
    Reference
    Paniceae. Gard & Hubb 1997.

    Images

    Distribution

    Native to:

    Northern Territory, Western Australia

    Synonyms

    Other Data

    Urochloa occidentalis (C.A.Gardner & C.E.Hubb.) B.K.Simon appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Macquire [s.n.], Western Australia Brachiaria occidentalis var. ciliata K000348956 holotype
    Mar 1, 1988 Gardner, C.A. [3227], Western Australia Brachiaria occidentalis K000215120 isotype
    Macquire [s.n.], Australia Brachiaria occidentalis K000348957

    Bibliography

    First published in Austrobaileya 8: 215 (2010)

    Accepted by

    • Govaerts, R. (2019). World Checklist of Vascular Plants (WCVP 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 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