1. Family: Poaceae Barnhart
    1. Genus: Dichanthium Willemet
      1. Dichanthium tenue (R.Br.) A.Camus

        This species is accepted, and its native range is E. Australia.

    [GB]
    Habit
    Perennial; caespitose. Culms erect; 30-70 cm long; 2-4 -noded. Culm-internodes channelled. Culm-nodes bearded. Lateral branches lacking. Leaf-sheaths glabrous on surface. Ligule a ciliolate membrane; 0.5-0.75 mm long; truncate. Leaf-blades 7-15 cm long; 2-3.5 mm wide. Leaf-blade surface scaberulous, or scabrous; glabrous, or pilose; with tubercle-based hairs. Leaf-blade apex acuminate.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1-3; single, or paired, or digitate; 3-6 cm long. Rhachis fragile at the nodes; subterete; ciliate on margins. Rhachis hairs lengthening towards internode tip; 1-1.5 mm long. Rhachis internodes linear. Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels linear; without a translucent median line; ciliate; hairy all along but hairs longer above; with 1-1.5 mm long hairs.
    Spikelets
    Basal sterile spikelets well-developed; 2-4 in number; barren; smaller than fertile. Basal sterile spikelet lemmas awnless. Companion sterile spikelets well-developed; male; elliptic; 4-6 mm long; as long as fertile; separately deciduous. Companion sterile spikelet glumes 9 -veined; ciliate on margins. Companion sterile spikelet lemmas enclosed by glumes; muticous. Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; 4-6 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus pilose; base obtuse; attached transversely. Spikelet callus hairs 0.5-0.9 mm long.
    Sterile
    Basal sterile spikelets well-developed; 2-4 in number; barren; smaller than fertile. Basal sterile spikelet lemmas awnless. Companion sterile spikelets well-developed; male; elliptic; 4-6 mm long; as long as fertile; separately deciduous. Companion sterile spikelet glumes 9 -veined; ciliate on margins. Companion sterile spikelet lemmas enclosed by glumes; muticous.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; 4-6 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus pilose; base obtuse; attached transversely. Spikelet callus hairs 0.5-0.9 mm long.
    Glume
    Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume oblong; 1 length of spikelet; chartaceous; of similar consistency above; without keels; keel-less except near apex; 8-9 -veined. Lower glume surface smooth, or asperulous. Lower glume margins ciliolate. Lower glume apex truncate, or obtuse. Upper glume lanceolate; 1-keeled; 3 -veined.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret ovate; hyaline. Fertile lemma linear; hyaline; without keel; 1 -veined. Lemma apex entire; awned; 1 -awned. Principal lemma awn apical; geniculate; 22-28 mm long overall; with twisted column. Column of lemma awn glabrous. Palea absent or minute.
    Flowers
    Anthers 3; 1 mm long.
    Fruits
    Caryopsis with adherent pericarp; oblong; 2.5 mm long.
    Distribution
    Australasia: Australia. Pacific: southwestern and north-central.
    Reference
    Andropogoneae. Fl NSW 1993.

    Distribution

    Native to:

    New South Wales, Queensland

    Introduced into:

    Hawaii, Tonga

    Dichanthium tenue (R.Br.) A.Camus appears in other Kew resources:

    First published in Bull. Mus. Natl. Hist. Nat. 27: 549 (1921)

    Accepted by

    • Clayton, W.D. & Snow, N. (2010). A key to Pacific Grasses: 1-107. Kew Publishing, Royal Botanic Gardens, Kew.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.

    Literature

    Kew Backbone Distributions
    • Clayton, W.D. & Snow, N. (2010). A key to Pacific Grasses: 1-107. Kew Publishing, Royal Botanic Gardens, Kew.
    • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.

    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