1. Family: Poaceae Barnhart
    1. Genus: Panicum L.
      1. Panicum decompositum R.Br.

        This species is accepted, and its native range is Taiwan, Australia to SW. Pacific.

    [GB]
    Habit
    Perennial; caespitose; clumped densely. Rootstock evident. Culms 30-80 cm long; compressible; 3-4 -noded. Culm-nodes glabrous, or pubescent. Leaf-sheaths longer than adjacent culm internode; keeled; glabrous on surface, or pilose; with tubercle-based hairs. Ligule a ciliolate membrane; 2 mm long. Leaf-blades flat, or conduplicate, or involute; 25-50 cm long; 3-9.5 mm wide; glaucous. Leaf-blade midrib conspicuous. Leaf-blade surface glabrous, or pilose; with tubercle-based hairs. Leaf-blade margins scaberulous. Leaf-blade apex acute, or attenuate.
    Inflorescences
    Inflorescence a panicle. Panicle open; ovate; 15-30 cm long; with spikelets clustered towards branch tips. Primary panicle branches spreading; whorled at lower nodes. Panicle branches stiff; flat (at base); scabrous. Spikelets in pairs. Fertile spikelets pedicelled. Pedicels 1-4 mm long; tip cupuliform.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic, or ovate; dorsally compressed; compressed slightly; acuminate; 2.75-3.5 mm long; 1.25 mm wide; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic, or ovate; dorsally compressed; compressed slightly; acuminate; 2.75-3.5 mm long; 1.25 mm wide; falling entire.
    Glume
    Glumes reaching apex of florets; thinner than fertile lemma. Lower glume ovate; clasping; 0.25-0.33 length of spikelet; membranous; without keels; 0-1 -veined. Lower glume lateral veins absent. Lower glume apex truncate, or obtuse. Upper glume elliptic; 1 length of spikelet; membranous; without keels; 7 -veined. Upper glume apex acuminate.
    Florets
    Basal sterile florets barren; with palea. Lemma of lower sterile floret similar to upper glume; elliptic; 1 length of spikelet; membranous; 7 -veined; acuminate. Palea of lower sterile floret 0.66-0.9 length of lemma. Fertile lemma elliptic, or oblong; dorsally compressed; 2-2.2 mm long; indurate; yellow, or dark brown; shiny; without keel; 7 -veined. Lemma lateral veins prominent. Lemma margins involute. Lemma apex obtuse. Palea involute; indurate.
    Flowers
    Anthers 3.
    Fruits
    Caryopsis with adherent pericarp; ellipsoid, or ovoid; 1.5 mm long. Embryo 0.5 length of caryopsis.
    Distribution
    Asia-temperate: eastern Asia. Australasia: Australia. Pacific: southwestern.
    Reference
    Paniceae. Fl NSW 1993.

    Images

    Distribution

    Doubtfully present in:

    Cyprus

    Native to:

    Fiji, New Caledonia, New South Wales, Northern Territory, Queensland, Taiwan, Tonga, Victoria, Western Australia

    Introduced into:

    Cyprus

    Panicum decompositum R.Br. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Feb 1, 1965 Woolls, W. [s.n.], New South Wales K000674342 syntype
    Koch, M. [448], South Australia K000674343 syntype
    Helms, R. [s.n.], South Australia K000674344 syntype
    Pancher, M. [s.n.], New Caledonia K000674371 syntype
    Pancher, M. [s.n.], New Caledonia K000674372
    Pancher, M. [s.n.], New Caledonia K000674373 syntype
    Pancher, M. [s.n.], New Caledonia K000674374 syntype
    Clement, E. [s.n.], Australia Panicum decompositum var. scaberrimum K000674347
    Bick, E.W. [5], Queensland Panicum decompositum var. tenuius K000215186
    Bick, E.W. [5 [bis]], Queensland Panicum decompositum var. tenuius K000215187
    Bick, E.W. [6], Queensland Panicum decompositum var. tenuius K000215188
    Bick, E.W. [7], Queensland Panicum decompositum var. tenuius K000215189
    Clement, E. [s.n.], Western Australia Panicum decompositum var. utile K000674348
    Clement, E. [s.n.], Western Australia Panicum decompositum var. utile K000674349

    First published in Prodr. Fl. Nov. Holland.: 191 (1810)

    Accepted by

    • Clayton, W.D. & Snow, N. (2010). A key to Pacific Grasses: 1-107. Kew Publishing, Royal Botanic Gardens, Kew.
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Meikle, R.D. (1985). Flora of Cyprus 2: 833-1970. The Bentham-Moxon Trust Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions
    • Clayton, W.D. & Snow, N. (2010). A key to Pacific Grasses: 1-107. Kew Publishing, Royal Botanic Gardens, Kew.
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.
    • Meikle, R.D. (1985). Flora of Cyprus 2: 833-1970. The Bentham-Moxon Trust 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 2019. 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 2019. 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