1. Family: Poaceae Barnhart
    1. Genus: Coelachne R.Br.
      1. Coelachne perpusilla (Nees ex Steud.) Thwaites

        This species is accepted, and its native range is S. India, Sri Lanka, Indo-China to Philippines.

    [GB]
    Habit
    Annual; mat forming. Culms prostrate; weak; 8-30 cm long; rooting from lower nodes. Culm-nodes bearded. Leaf-sheaths glabrous on surface. Ligule a fringe of hairs. Leaf-blades linear, or lanceolate; 0.8-2.5 cm long; 1-3 mm wide. Leaf-blade surface glabrous, or pubescent.
    Inflorescences
    Inflorescence a panicle. Panicle open; oblong; 1-6 cm long. Primary panicle branches spreading; simple; 0.6-1.2 cm long; bearing 1-3 fertile spikelets on each lower branch; bearing spikelets almost to the base. Spikelets solitary. Fertile spikelets pedicelled. Pedicels linear; 1-2.5 mm long.
    Spikelets
    Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 2.5-3 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 2.5-3 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes persistent; similar; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 1.2-1.5 mm long; 0.8 length of upper glume; 0.5 length of spikelet; membranous; without keels; 1-3 -veined. Lower glume apex obtuse. Upper glume ovate; 1.2-1.5 mm long; 0.5 length of spikelet; membranous; without keels; 5 -veined. Upper glume apex obtuse.
    Florets
    Fertile florets female (upper); with the lowest dissimilar. Lowest fertile lemma bisexual; ovate; 1.1 length of adjacent lemma; firmer than adjacent lemma; hairy (below). Fertile lemma ovate; 2 mm long; membranous; without keel; 3-5 -veined. Lemma lateral veins obscure. Lemma surface pubescent; hairy below. Lemma margins ciliolate. Lemma apex acute. Palea 1 length of lemma; 2 -veined.
    Flowers
    Anthers 1.2-1.3 mm long.
    Fruits
    Caryopsis with adherent pericarp; oblong, or ovoid; 0.7-0.9 mm long. Embryo 0.33 length of caryopsis. Hilum punctiform.
    Distribution
    Asia-tropical: India and Indo-China.
    Reference
    Isachneae. Fl Ceyl 1993.

    Images

    Distribution

    Native to:

    India, Laos, Philippines, Sri Lanka, Thailand, Vietnam

    Coelachne perpusilla (Nees ex Steud.) Thwaites appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Gardner, G. [1351], Sri Lanka K000245452 Unknown type material
    Maxwell, G. [s.n.], Sri Lanka K001056286
    Walker, G.W. [s.n.], Sri Lanka K001056289
    Thwaites, G.H.K. [s.n.], Sri Lanka K000245451 holotype
    Thwaites, G.H.K. [s.n.], Sri Lanka K001056290 Unknown type material
    Thwaites, G.H.K [s.n.], Sri Lanka K000245450 holotype
    s.coll. [2043], Sri Lanka K000245453 Unknown type material
    s.coll. [s.n.], Sri Lanka K001056287 Unknown type material
    s.coll. [2043], Sri Lanka K001056288

    First published in Enum. Pl. Zeyl.: 373 (1864)

    Accepted by

    • Newman, M., Ketphanh, S., Svengsuksa, B., Thomas, P., Sengdala, K., Lamxay, V. & Armstrong, K. (2007). A checklist of the vascular plants of Lao PDR: 1-394. Royal Botanic Gardens, Edinburgh.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Dassanayake (ed.) (1994). A Revised Handbook to the Flora of Ceylon 8: 1-458. Oxford & IBH Publishing Co. PVT. LTD., New Delhi, Calcutta.
    • Karthikeyan, S., Jain, S.K., Nayar, M.P. & Sanjappa, M. (1989). Florae Indicae Enumeratio: Monocotyledonae: 1-435. Botanical Survey of India, Calcutta.

    Literature

    Kew Backbone Distributions
    • Newman, M., Ketphanh, S., Svengsuksa, B., Thomas, P., Sengdala, K., Lamxay, V. & Armstrong, K. (2007). A checklist of the vascular plants of Lao PDR: 1-394. Royal Botanic Gardens, Edinburgh.
    • Dassanayake (ed.) (1994). A Revised Handbook to the Flora of Ceylon 8: 1-458. Oxford & IBH Publishing Co. PVT. LTD., New Delhi, Calcutta.
    • Karthikeyan, S., Jain, S.K., Nayar, M.P. & Sanjappa, M. (1989). Florae Indicae Enumeratio: Monocotyledonae: 1-435. Botanical Survey of India, Calcutta.
    • Camus, E.G. & Camus, A. in H. Lecomte (1922). Flore Générale de l'indo-Chine 1(3): 193-336.

    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