1. Family: Poaceae Barnhart
    1. Genus: Elymus L.
      1. Elymus barystachyus L.B.Cai

        This species is accepted, and its native range is W. & S. Central China (Sichuan).

    [GB]
    Habit
    Perennial; culms solitary, or caespitose; clumped loosely. Culms geniculately ascending; 50-80 cm long; 2.5-4.5 mm diam.; 3-5 -noded. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane; 1 mm long. Leaf-blades 7-27 cm long; 4-8 mm wide. Leaf-blade surface glabrous.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; erect; bilateral; 8-18 cm long; 5-9 mm wide. Rhachis flattened; ciliate on margins. Spikelet packing broadside to rhachis. Spikelets appressed; solitary to in pairs. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 4-6 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 10-18 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 4-6 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 10-18 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes persistent; similar. Lower glume linear, or lanceolate; 7-10 mm long; 1 length of upper glume; coriaceous; without keels; 3-7 -veined. Lower glume surface pubescent; hairy on veins. Lower glume apex acuminate to setaceously attenuate. Upper glume linear, or lanceolate; 7-10 mm long; 1 length of adjacent fertile lemma; coriaceous; without keels; 3-7 -veined. Upper glume surface puberulous; hairy on veins. Upper glume apex acuminate to setaceously attenuate.
    Florets
    Fertile lemma lanceolate, or oblong; 7-8 mm long; coriaceous; 5 -veined. Lemma surface scabrous; rough below; pubescent; hairy above. Lemma margins pubescent. Lemma apex acuminate; muticous, or awned; 1 -awned. Principal lemma awn 0-2 mm long overall. Palea 1 length of lemma; 2 -veined. Palea keels ciliate. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Anthers 3; 2 mm long; yellow, or black.
    Distribution
    Asia-temperate: China.
    Reference
    Triticeae. Fl China 2005.

    Distribution

    Native to:

    China South-Central, Qinghai, Tibet

    Elymus barystachyus L.B.Cai appears in other Kew resources:

    First published in Acta Bot. Boreal.-Occid. Sin. 13(6): 70 (1993)

    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