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  1. Family: Poaceae Barnhart
    1. Genus: Urochloa P.Beauv.
      1. Urochloa atrisola R.D.Webster

        This species is accepted, and its native range is NE. Northern Territory to N. Central Queensland.

    [GB]
    Habit
    Annual. Culms geniculately ascending; 10-60 cm long; 1-6 -noded. Culm-nodes glabrous. Lateral branches ample. Leaf-sheaths keeled; glabrous on surface, or pubescent; outer margin glabrous, or hairy. Ligule a fringe of hairs; 0.8-1.4 mm long. Collar glabrous. Leaf-blades linear, or lanceolate; 3-15 cm long; 4-102 mm wide. Leaf-blade surface glabrous. Leaf-blade margins scabrous.
    Inflorescences
    Inflorescence composed of racemes. Racemes 2-4; borne along a central axis; unilateral; 1.5-6 cm long; bearing 6-16 fertile spikelets on each. Central inflorescence axis 4-15 cm long. Rhachis narrowly winged; flattened; 1-1.5 mm wide; scabrous on margins. Spikelet packing adaxial. Spikelets solitary. Fertile spikelets pedicelled. Pedicels reduced to a stump.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; compressed slightly; obtuse; 3.6-4.5 mm long; 1.9-2.3 mm wide; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; compressed slightly; obtuse; 3.6-4.5 mm long; 1.9-2.3 mm wide; falling entire.
    Glume
    Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume oblate; clasping; 0.8-1.6 mm long; 0.25-0.33 length of spikelet; hyaline; without keels; 7-11 -veined. Lower glume apex truncate. Upper glume elliptic; 1 length of spikelet; membranous; without keels; 9 -veined. Upper glume apex obtuse.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret similar to upper glume; elliptic; 1 length of spikelet; membranous; 5 -veined; obtuse. Fertile lemma elliptic; 3.4-4.3 mm long; indurate; without keel. Lemma surface rugulose. Lemma margins involute. Lemma apex obtuse; mucronate. Palea involute; indurate; without keels.
    Distribution
    Australasia: Australia.
    Reference
    Paniceae. Webster 1995.

    Images

    Distribution

    Native to:

    Northern Territory, Queensland

    Synonyms

    Other Data

    Urochloa atrisola R.D.Webster appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Oct 21, 1991 Blake, S.T. [17776], Northern Territory Brachiaria atrisola K000958877 isotype

    Bibliography

    First published in Austral. Paniceae: 232 (1987)

    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 Brachiaria atrisola.]

    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