1. Family: Poaceae Barnhart
    1. Genus: Clausospicula Lazarides
      1. Clausospicula extensa Lazarides

        This species is accepted, and its native range is N. Northern Territory.

    [GB]
    Habit
    Annual. Culms 30-45 cm long; 5-7 -noded. Culm-internodes elliptical in section. Lateral branches sparse. Leaf-sheaths medianly thickened; pilose; with tubercle-based hairs; outer margin hairy. Ligule a ciliolate membrane; 0.3-0.5 mm long. Leaf-blades flat, or conduplicate; 1.4-2.6 mm wide. Leaf-blade surface pilose; with tubercle-based hairs. Leaf-blade margins cartilaginous. Leaf-blade apex acute.
    Inflorescences
    Inflorescence a panicle with branches tipped by a raceme; exserted, or embraced at base by subtending leaf. Panicle open; bearing few spikelets. Primary panicle branches 1-3 in number; simple. Racemes bearing a triad of spikelets. Rhachis obsolete. Raceme-bases filiform; extended into an oblong appendage; with 4 mm long appendage; persistent. Spikelets in threes. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 2 in the cluster. Pedicels filiform; flattened; glabrous.
    Sterile
    Companion sterile spikelets represented by barren pedicels, or rudimentary, or well-developed; comprising 2 subequal glumes without lemmas; linear, or lanceolate; 5-12 mm long; separately deciduous. Companion sterile spikelet glumes membranous; thinner on margins; 7 -veined; eciliate on margins, or ciliate on margins.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets obovate; dorsally compressed; 10 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus cuneate; curved; 3-3.5 mm long; bearded; base pungent; attached obliquely; with linear scar. Spikelet callus hairs dark brown. Companion sterile spikelets represented by barren pedicels, or rudimentary, or well-developed; comprising 2 subequal glumes without lemmas; linear, or lanceolate; 5-12 mm long; separately deciduous. Companion sterile spikelet glumes membranous; thinner on margins; 7 -veined; eciliate on margins, or ciliate on margins.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets obovate; dorsally compressed; 10 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus cuneate; curved; 3-3.5 mm long; bearded; base pungent; attached obliquely; with linear scar. Spikelet callus hairs dark brown.
    Glume
    Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma; shiny. Lower glume obovate; coriaceous; much thinner above; dark brown; without keels; keel-less except near apex. Lower glume surface convex; rugose; rough at apex. Lower glume apex rostrate; muticous, or awned; 1 -awned. Lower glume awn 2-3 mm long. Upper glume oblong; 1 length of spikelet; coriaceous. Upper glume apex attenuate; awned; 1 -awned. Upper glume awn 14-19 mm long.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret elliptic; 4.5-5 mm long; hyaline; 2 -veined; ciliate on margins; truncate, or obtuse. Fertile lemma linear; hyaline; 3 -veined. Lemma margins ciliate. Lemma apex attenuate; awned; 1 -awned. Principal lemma awn apical; geniculate; 85-105 mm long overall; with 45-60 mm long limb; with twisted column. Column of lemma awn 40-55 mm long; pubescent. Palea absent or minute.
    Flowers
    Lodicules 2; oblong, or cuneate; 0.4-0.6 mm long; membranous. Anthers 3; 0.5-1.5 mm long.
    Fruits
    Caryopsis with adherent pericarp; ellipsoid; 5.6 mm long; acute. Hilum punctiform.
    Distribution
    Australasia: Australia.
    Reference
    Andropogoneae. Lazarides.

    Images

    Distribution

    Native to:

    Northern Territory

    Clausospicula extensa Lazarides appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Aug 2, 1990 Leach, G.J. [2575], Northern Territory K001050447 paratype

    First published in Austral. Syst. Bot. 4: 399 (1991)

    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 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