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  1. Family: Poaceae Barnhart
    1. Genus: Leymus Hochst.
      1. Leymus crassiusculus L.B.Cai

        This species is accepted, and its native range is Qinghai, China (Shanxi).

    [GB]
    Habit
    Perennial. Culms erect; 70-110 cm long; 4 mm diam.; 2-3 -noded. Leaves mostly basal. Leaf-sheaths glabrous on surface; outer margin glabrous, or hairy. Ligule an eciliate membrane; 1.5-2 mm long; truncate. Leaf-blades convolute; 20-42 cm long; 5-7 mm wide; stiff. Leaf-blade surface smooth, or scabrous; rough adaxially; glabrous.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; erect; bilateral; 16-22 cm long; 15-20 mm wide. Rhachis flattened; villous on surface. Spikelet packing broadside to rhachis. Rhachis internodes 4-10 mm long. Spikelets clustered at each node. Fertile spikelets sessile; 4-6(-11) in the cluster.
    Spikelets
    Spikelets comprising 4-7 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 12-18 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1-1.5 mm long; pubescent.
    Fertile
    Spikelets comprising 4-7 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 12-18 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1-1.5 mm long; pubescent.
    Glume
    Glumes persistent; similar; subequal in width; shorter than spikelet. Lower glume linear; 10-13 mm long; 1 length of upper glume; coriaceous; much thinner on margins; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume margins ciliate. Lower glume apex attenuate. Upper glume linear; 10-13 mm long; 1.1 length of adjacent fertile lemma; coriaceous; with membranous margins; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume margins ciliate. Upper glume apex attenuate.
    Florets
    Fertile lemma lanceolate; 8-10 mm long; chartaceous; keeled; 5 -veined. Lemma lateral veins obscure. Lemma surface pubescent. Lemma apex acuminate; awned; 1 -awned. Principal lemma awn 1-2 mm long overall. Palea 1 length of lemma; 2 -veined; 2-keeled. Palea keels ciliate. Palea apex emarginate. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Anthers 3; 5 mm long; yellow.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    Asia-temperate: China.
    Reference
    Triticeae. Fl China 2005.

    Distribution

    Native to:

    China North-Central, Qinghai

    Other Data

    Leymus crassiusculus L.B.Cai appears in other Kew resources:

    Bibliography

    First published in Acta Phytotax. Sin. 33: 494 (1995)

    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