1. Family: Poaceae Barnhart
    1. Genus: Isachne R.Br.
      1. Isachne dioica Swallen

        This species is accepted, and its native range is Vietnam.

    [GB]
    Habit
    Annual. Culms decumbent; weak; 10-20 cm long. Lateral branches sparse, or ample. Leaf-sheaths mostly shorter than adjacent culm internode; glabrous on surface, or pubescent. Ligule a fringe of hairs; 0.5 mm long. Leaf-blades ovate; 0.7-1.6 cm long; 3-7 mm wide; stiff. Leaf-blade surface pilose. Leaf-blade margins scabrous.
    Inflorescences
    Inflorescence a panicle. Panicle open; oblong; 2-4 cm long. Primary panicle branches ascending, or spreading, or reflexed; 0.5-1 cm long. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 1.8-2 mm long; breaking up at maturity; disarticulating above glumes but not between florets. Rhachilla internodes elongated below proximal fertile floret.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 1.8-2 mm long; breaking up at maturity; disarticulating above glumes but not between florets. Rhachilla internodes elongated below proximal fertile floret.
    Glume
    Glumes deciduous; similar; shorter than spikelet; thinner than fertile lemma; gaping. Lower glume ovate; 1.3-1.5 mm long; 0.75 length of spikelet; membranous; without keels; 5 -veined. Lower glume surface hispidulous. Lower glume apex obtuse. Upper glume ovate; 1.3-1.5 mm long; 0.75 length of spikelet; membranous; without keels; 5 -veined. Upper glume surface hispidulous. Upper glume apex obtuse.
    Florets
    Basal sterile florets male; with palea. Lemma of lower sterile floret elliptic; 1.8 mm long; membranous. Fertile lemma orbicular; 0.8 mm long; indurate; without keel. Lemma surface puberulous. Lemma margins involute. Lemma apex obtuse. Palea indurate; 2 -veined.
    Flowers
    Anthers 3; 1.5 mm long.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    Asia-tropical: Indo-China.
    Reference
    Isachneae. Swallen 1997.

    Distribution

    Native to:

    Vietnam

    Isachne dioica Swallen appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    van Beusekom, C.F. [2138], Thailand K000688385

    First published in J. Washington Acad. Sci. 26: 537 (1936)

    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.

    Literature

    Kew Backbone Distributions
    • H?, P.-H. (2000). Câyc? Vi?tnam. An Illustrated flora of Vietnam, ed. 2, 3: 1-1020. Pham-hoang Ho, Montréal.

    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.

    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