1. Family: Poaceae Barnhart
    1. Genus: Elymus L.
      1. Elymus viridulus (Keng & S.L.Chen) S.L.Chen

        This species is accepted, and its native range is NW. China.

    [GB]
    Habit
    Perennial; caespitose. Culms geniculately ascending; 60-100 cm long; 1 mm diam.; 4 -noded; with 0.66-0.75 of their length below uppermost node. Culm-internodes smooth; distally glabrous. Leaf-sheaths mostly shorter than adjacent culm internode, or subequal to internodes; glabrous on surface, or pubescent; with reflexed hairs. Ligule an eciliate membrane; 0.3 mm long; scarious; truncate. Leaf-blades flat, or involute; 15-20 cm long; 2.5-4 mm wide. Leaf-blade surface scabrous; rough adaxially; glabrous; hairless except near base. Leaf-blade margins scabrous.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; erect, or drooping; bilateral; 7.5-9.5 cm long. Rhachis flattened; ciliate on margins. Spikelet packing broadside to rhachis; regular; 2 -rowed. Rhachis internodes 6-13 mm long. Spikelets solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 5-6 fertile florets; with diminished florets at the apex. Spikelets laterally compressed; 14-28 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1-1.5 mm long; pubescent. Floret callus pubescent.
    Fertile
    Spikelets comprising 5-6 fertile florets; with diminished florets at the apex. Spikelets laterally compressed; 14-28 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1-1.5 mm long; pubescent. Floret callus pubescent.
    Glume
    Glumes persistent; similar; subequal in width; shorter than spikelet. Lower glume lanceolate; 7-10 mm long; coriaceous; much thinner on margins; 1-keeled; 4-6 -veined. Lower glume apex acuminate; awned; 1 -awned. Lower glume awn 1-2 mm long. Upper glume lanceolate; 7-10 mm long; coriaceous; with membranous margins; 1-keeled; 4-6 -veined. Upper glume apex acuminate; awned; 1 -awned. Upper glume awn 1-2 mm long.
    Florets
    Fertile lemma lanceolate, or oblong; 10 mm long; coriaceous; much thinner on margins; without keel; 5 -veined. Lemma surface glabrous. Lemma margins scaberulous (above). Lemma apex awned; 1 -awned. Principal lemma awn straight; 2-6 mm long overall. Palea 1 length of lemma; 2 -veined. Palea keels ciliolate; adorned above. Palea surface puberulous. Palea apex emarginate, or truncate. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; 2 mm long; membranous; ciliate. Anthers 3; 4 mm long; yellow. Stigmas 2. Ovary pubescent on apex.
    Fruits
    Caryopsis with adherent pericarp; obovoid; hairy at apex; apex unappendaged. Hilum linear.
    Distribution
    Asia-temperate: China.
    Reference
    Triticeae. Chen 2001.

    Distribution

    Native to:

    Xinjiang

    Elymus viridulus (Keng & S.L.Chen) S.L.Chen appears in other Kew resources:

    First published in Bull. Nanjing Bot. Gard. 1987: 9 (1988)

    Accepted by

    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.
    • 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
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.

    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