1. Family: Poaceae Barnhart
    1. Genus: Hemarthria R.Br.
      1. Hemarthria depressa Heuvel

        This species is accepted, and its native range is Indo-China to Peninsula Malaysia.

    [GB]
    Habit
    Perennial. Culms 40-50 cm long. Culm-internodes elliptical in section; distally glabrous, or pubescent. Culm-nodes glabrous. Leaf-sheaths loose; longer than adjacent culm internode; keeled; outer margin glabrous, or hairy. Ligule a ciliolate membrane; 0.5-1.5 mm long. Leaf-blades conduplicate; 5-25 cm long; 1-3 mm wide. Leaf-blade surface scabrous; glabrous, or pubescent; sparsely hairy; hairy adaxially, or abaxially, or on both sides.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; smoothly terete; 10-18 cm long. Rhachis fracturing into irregular segments; flattened. Rhachis internodes columnar; 7-8 mm long. Rhachis internode tip oblique; flat. Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels fused to internode; united wholly; oblong; flattened; tip rectangular.
    Sterile
    Companion sterile spikelets well-developed; male; lanceolate; 7.7-10.3 mm long; shorter than fertile; deciduous with the fertile. Companion sterile spikelet callus truncate. Companion sterile spikelet glumes herbaceous; keeled; 11-13 -veined. Companion sterile spikelet lemmas 2; enclosed by glumes; 5-7.6 mm long.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets linear, or lanceolate; dorsally compressed; 9-12 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus cuneate; 1.5-4 mm long; glabrous; base truncate; attached obliquely. Companion sterile spikelets well-developed; male; lanceolate; 7.7-10.3 mm long; shorter than fertile; deciduous with the fertile. Companion sterile spikelet callus truncate. Companion sterile spikelet glumes herbaceous; keeled; 11-13 -veined. Companion sterile spikelet lemmas 2; enclosed by glumes; 5-7.6 mm long.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets linear, or lanceolate; dorsally compressed; 9-12 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus cuneate; 1.5-4 mm long; glabrous; base truncate; attached obliquely.
    Glume
    Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume linear, or lanceolate; 6.9-9 mm long; 1 length of spikelet; coriaceous; 2-keeled; keeled laterally; 9-15 -veined. Lower glume primary vein scabrous. Lower glume surface flat. Lower glume apex acuminate. Upper glume linear; 6.8-9.2 mm long; coriaceous; without keels; 3-5 -veined.
    Florets
    Basal sterile florets male; with palea. Lemma of lower sterile floret oblong; 5.2-7.5 mm long; hyaline. Fertile lemma oblong; 4.4-6 mm long; hyaline; without keel; 0 -veined. Palea absent or minute.
    Flowers
    Anthers 3; 2.7-3.6 mm long.
    Fruits
    Caryopsis with adherent pericarp; 2 mm long.
    Distribution
    Asia-tropical: Indo-China.
    Reference
    Andropogoneae. Heuvel 2002.

    Distribution

    Native to:

    Laos, Malaya, Thailand, Vietnam

    Hemarthria depressa Heuvel appears in other Kew resources:

    First published in Blumea 45: 456 (2000)

    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.

    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 2019. 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 2019. 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