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

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

    [GB]
    Habit
    Annual. Culms geniculately ascending; 15-30 cm long. Culm-internodes distally glabrous. Leaf-sheaths mostly shorter than adjacent culm internode; hispid; outer margin hairy. Ligule a fringe of hairs; 1 mm long. Leaf-blades lanceolate; 3-8 cm long; 4-8 mm wide. Leaf-blade surface pubescent; densely hairy. Leaf-blade apex acute.
    Inflorescences
    Inflorescence a panicle. Panicle open; elliptic; 12-14 cm long; 6 cm wide. Primary panicle branches ascending; 6-8 cm long. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 1-2.5 mm long.
    Spikelets
    Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 1.5 mm long; breaking up at maturity; disarticulating above glumes but not between florets.
    Fertile
    Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 1.5 mm long; breaking up at maturity; disarticulating above glumes but not between florets.
    Glume
    Glumes deciduous; similar; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 1.3 mm long; 0.9 length of spikelet; membranous; without keels. Lower glume surface glabrous, or puberulous. Lower glume apex obtuse. Upper glume ovate; 1.3 mm long; 0.9 length of spikelet; membranous; without keels. Upper glume surface glabrous, or puberulous. Upper glume apex obtuse.
    Florets
    Fertile lemma elliptic; 1.3 mm long; coriaceous; without keel. Lemma surface pubescent. Lemma margins involute. Lemma apex obtuse. Palea coriaceous; 2 -veined.
    Flowers
    Anthers 3.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    Asia-tropical: Indo-China.
    Reference
    Isachneae. Swallen 1997.

    Distribution

    Native to:

    Vietnam

    Isachne ascendens Swallen appears in other Kew resources:

    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

    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