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  1. Family: Poaceae Barnhart
    1. Genus: Isachne R.Br.
      1. Isachne walkeri (Arn. ex Steud.) Wight & Arn. ex Thwaites

        This species is accepted, and its native range is SW. & S. India, Sri Lanka.

    [GB]
    Habit
    Perennial; mat forming. Culms rambling; 30-150 cm long; woody; rooting from lower nodes. Culm-nodes glabrous. Leaf-sheaths outer margin hairy. Ligule a fringe of hairs. Leaf-blade base broadly rounded. Leaf-blades lanceolate; 3.5-20 cm long; 5-25 mm wide. Leaf-blade margins cartilaginous. Leaf-blade apex acuminate.
    Inflorescences
    Inflorescence a panicle. Panicle open; ovate; 5-35 cm long; bearing few spikelets. Spikelets solitary. Fertile spikelets pedicelled. Pedicels glandular.
    Spikelets
    Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets obovate; dorsally compressed; 3-4.5 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets obovate; dorsally compressed; 3-4.5 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes deciduous; similar; reaching apex of florets; thinner than fertile lemma. Lower glume lanceolate, or ovate; 3-4 mm long; 1 length of spikelet; membranous; without keels; 7-9 -veined. Lower glume surface puberulous. Lower glume apex obtuse. Upper glume lanceolate, or ovate; 3-4.5 mm long; 1 length of spikelet; membranous; without keels; 9-11 -veined. Upper glume surface puberulous. Upper glume apex obtuse.
    Florets
    Fertile lemma ovate, or obovate; 3-3.5 mm long; coriaceous; without keel. Lemma surface puberulous. Lemma margins involute. Lemma apex obtuse. Palea coriaceous; 2 -veined.
    Flowers
    Anthers 3; 1.8-2.4 mm long.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    Asia-tropical: India.
    Reference
    Isachneae. Nair 1993.

    Images

    Distribution

    Native to:

    India, Sri Lanka

    Synonyms

    Other Data

    Isachne walkeri (Arn. ex Steud.) Wight & Arn. ex Thwaites appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    May 1, 1931 Hohenacker, R.F. [1280], India K000245430 Unknown type material
    Walker, G.W. [s.n.], Sri Lanka K001056207

    Bibliography

    First published in Enum. Pl. Zeyl.: 361 (1864)

    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.
    • Iskandar, E.A.P. & Veldkamp, J.F. (2004). A revision of Malesian Isachne sect. Isachne (Gramineae, Panicoideae, Isachneae) Reinwardtia 12: 159-179.
    • 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

    • Dassanayake (ed.) (1994). A Revised Handbook to the Flora of Ceylon 8: 1-458. Oxford & IBH Publishing Co. PVT. LTD., New Delhi, Calcutta.

    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