1. Family: Poaceae Barnhart
    1. Genus: Isachne R.Br.
      1. Isachne langkawiensis Jansen

        This species is accepted, and its native range is NE. Thailand, Peninsula Malaysia (Langkawi).

    [GB]
    Habit
    Perennial; caespitose. Culms geniculately ascending, or decumbent; slender; 15-40 cm long. Leaf-sheaths 1 cm long; pilose; with tubercle-based hairs; outer margin hairy. Ligule a fringe of hairs. Leaf-blades lanceolate; 2-8 cm long; 2-9 mm wide. Leaf-blade surface pilose; hairy on both sides; with tubercle-based hairs. Leaf-blade margins cartilaginous; scabrous; ciliate; hairy at base. Leaf-blade apex acuminate.
    Inflorescences
    Inflorescence a panicle; comprising 30 fertile spikelets. Panicle open; ovate; 5-12 cm long; 4 cm wide. Spikelets solitary. Fertile spikelets pedicelled; heteromorphic (distal hairy).
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets orbicular; dorsally compressed; 2 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets orbicular; dorsally compressed; 2 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes deciduous; similar; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 1.6 mm long; 1 length of upper glume; 1 length of spikelet; membranous; without keels; 3(-5) -veined. Lower glume surface glabrous. Lower glume apex obtuse. Upper glume ovate; 1.4 mm long; 1 length of adjacent fertile lemma; membranous; purple; without keels; 5 -veined. Upper glume surface glabrous, or pilose; with tubercle-based hairs. Upper glume apex obtuse.
    Florets
    Basal sterile florets male; with palea. Lemma of lower sterile floret elliptic; 1.8 mm long; membranous; glabrous; obtuse. Fertile lemma orbicular; 1.4 mm long; coriaceous; without keel. Lemma surface pubescent. Lemma margins involute. Lemma apex obtuse. Palea coriaceous; 2 -veined.
    Flowers
    Anthers 1.2 mm long.
    Distribution
    Asia-tropical: Malesia.
    Reference
    Isachneae. Gilliland 1997.

    Distribution

    Native to:

    Malaya, Thailand

    Isachne langkawiensis Jansen appears in other Kew resources:

    First published in Reinwardtia 2: 284 (1953)

    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.
    • Turner, I.M. (1995 publ. 1997). A catalogue of the Vascular Plants of Malaya Gardens' Bulletin Singapore 47(2): 347-655.
    • Gilliland, H.B. (1971). A revised flora of Malaya 3: 1-319. The Royal Botanic Gardens, Singapore.

    Literature

    Kew Backbone Distributions
    • Gilliland, H.B. (1971). A revised flora of Malaya 3: 1-319. The Royal Botanic Gardens, Singapore.

    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