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  1. Family: Poaceae Barnhart
    1. Genus: Thedachloa S.W.L.Jacobs
      1. Thedachloa annua S.W.L.Jacobs

        This species is accepted, and its native range is N. Western Australia.

    [GB]
    Habit
    Annual. Cataphylls inconspicuous. Stolons present. Culms decumbent; slender; 10-30 cm long; rooting from lower nodes. Culm-internodes 3 cm long; ridged; distally glabrous. Culm-nodes constricted. Lateral branches lacking, or sparse. Leaf-sheaths ribbed; glabrous on surface; outer margin hairy. Ligule a fringe of hairs; 0.5 mm long. Leaf-blades 1-2 cm long. Leaf-blade venation prominent. Leaf-blade surface glabrous.
    Inflorescences
    Inflorescence a panicle. Panicle spiciform; ovate; 0.3-0.5 cm long; 0.4 cm wide. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; gibbous; 1.7-2.1 mm long; falling entire; readily shedding fertile florets.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; gibbous; 1.7-2.1 mm long; falling entire; readily shedding fertile florets.
    Glume
    Glumes shorter than spikelet; thinner than fertile lemma. Lower glume ovate; clasping; 0.6-0.8 mm long; 0.35 length of spikelet; hyaline; without keels; 3 -veined. Lower glume lateral veins obscure. Lower glume margins ciliate. Lower glume apex obtuse. Upper glume ovate; gibbous; 1.6-1.9 length of adjacent fertile lemma; 0.85 length of spikelet; membranous; without keels; 7 -veined. Upper glume surface setose; hairy above; with tubercle-based hairs. Upper glume apex acute.
    Florets
    Basal sterile florets male, or barren; with palea. Lemma of lower sterile floret similar to upper glume; elliptic; gibbous; 1 length of spikelet; membranous; 7 -veined; with unevenly spaced veins (the outer close); sulcate; acute. Palea of lower sterile floret 1.5 mm long; 0.75 length of lemma. Fertile lemma elliptic; 1 mm long; cartilaginous; light brown; shiny; without keel. Lemma surface with distinct germination flap. Lemma margins involute.
    Fruits
    Caryopsis with adherent pericarp; 0.8 mm long. Embryo 0.45 length of caryopsis.
    Distribution
    Australasia: Australia.
    Reference
    Paniceae. Jacobs 2007.

    Distribution

    Native to:

    Western Australia

    Other Data

    Thedachloa annua S.W.L.Jacobs appears in other Kew resources:

    Bibliography

    First published in Telopea 10: 637 (2004)

    Accepted by

    • Commonwealth Scientific and Industrial Research Organisation (2014- continuously updated). Atlas of Living Australia http://www.ala.org.au/.

    Literature

    Kew Backbone Distributions

    • Commonwealth Scientific and Industrial Research Organisation (2014- continuously updated). Atlas of Living Australia http://www.ala.org.au/.

    Sources

    GrassBase - The Online World Grass Flora
    http://creativecommons.org/licenses/by-nc-sa/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