1. Family: Poaceae Barnhart
    1. Genus: Vietnamosasa T.Q.Nguyen
      1. Vietnamosasa darlacensis T.Q.Nguyen

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

    [GB]
    Habit
    Perennial. Rhizomes elongated; leptomorph. Culms 100-150 cm long; 10 mm diam.; woody. Culm-internodes terete. Lateral branches dendroid. Culm-sheaths 22-25 cm long; 2 times as long as wide; coriaceous; convex at apex; auriculate; setose on shoulders; shoulders with 10-12 mm long hairs. Leaf-sheaths outer margin hairy. Leaf-sheath oral hairs ciliate. Ligule an eciliate membrane; 1 mm long. Leaf-blade base broadly rounded; with a brief petiole-like connection to sheath; petiole 0.1 cm long. Leaf-blades linear, or lanceolate; 9-15 cm long; 4-5 mm wide. Leaf-blade venation with distinct cross veins. Leaf-blade surface pilose; hairy adaxially. Leaf-blade apex attenuate.
    Inflorescences
    Inflorescence a panicle. Panicle open. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 5-7 fertile florets; with diminished florets at the apex. Spikelets linear, or oblong; laterally compressed; 20-40 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 5-7 fertile florets; with diminished florets at the apex. Spikelets linear, or oblong; laterally compressed; 20-40 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume ovate; 1-2 mm long; chartaceous; without keels. Lower glume apex acute. Upper glume ovate; 1-2 mm long; chartaceous; without keels. Upper glume apex acute.
    Florets
    Fertile lemma ovate; 8-9 mm long; chartaceous; without keel. Palea 8-9 mm long. Palea keels ciliate. Palea apex obtuse. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 3; ciliate. Anthers 6; 4 mm long. Stigmas 3.
    Fruits
    Caryopsis with adherent pericarp; apex unappendaged.
    Distribution
    Asia-tropical: Indo-China.
    Reference
    Bambuseae. Nguyen 1996.

    Distribution

    Native to:

    Vietnam

    Vietnamosasa darlacensis T.Q.Nguyen appears in other Kew resources:

    First published in Bot. Zhurn. (Moscow & Leningrad) 75: 221 (1990)

    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