1. Family: Poaceae Barnhart
    1. Genus: Leymus Hochst.
      1. Leymus pluriflorus L.B.Cai & Tong L.Zhang

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

    [GB]
    Habit
    Perennial; culms solitary, or caespitose. Rhizomes elongated. Butt sheaths persistent and investing base of culm; with fibrous dead sheaths. Culms erect, or geniculately ascending; 65-120 cm long; 2-4 mm diam.; 3-4 -noded. Culm-internodes distally glabrous. Leaves mostly basal. Leaf-sheaths glabrous on surface to pubescent. Ligule an eciliate membrane; 1.5-2.5 mm long; truncate. Leaf-blades flat, or involute; 10-28 cm long; 5-7 mm wide; stiff. Leaf-blade surface glabrous.
    Inflorescences
    Inflorescence composed of racemes. Peduncle glabrous, or pubescent above. Racemes 1; single; erect; linear, or oblong; bilateral; 13-20 cm long; 12-24 mm wide. Rhachis flattened; pubescent on surface. Spikelet packing broadside to rhachis; contiguous; with lowest internode elongated. Rhachis internodes 9-18 mm long. Spikelets in threes, or clustered at each node. Fertile spikelets sessile and pedicelled; 3-4 in the cluster. Pedicels 1-5 mm long; pubescent.
    Spikelets
    Spikelets comprising 8-12 fertile florets; with diminished florets at the apex. Spikelets elliptic; 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; obtuse. Floret callus hairs 0.5-1 mm long.
    Fertile
    Spikelets comprising 8-12 fertile florets; with diminished florets at the apex. Spikelets elliptic; 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; obtuse. Floret callus hairs 0.5-1 mm long.
    Glume
    Glumes persistent; similar; subequal in width; shorter than spikelet. Lower glume lanceolate; 11-15 mm long; 1 length of upper glume; herbaceous; 1 -veined. Lower glume lateral veins absent. Lower glume margins ciliolate. Lower glume apex setaceously attenuate. Upper glume lanceolate; 11-15 mm long; 1.1 length of adjacent fertile lemma; herbaceous; 1 -veined. Upper glume lateral veins absent. Upper glume margins ciliolate. Upper glume apex setaceously attenuate.
    Florets
    Fertile lemma lanceolate; 10-14 mm long; chartaceous; 5 -veined. Lemma lateral veins distinct. Lemma surface glabrous. Lemma margins ciliate. Lemma apex awned; 1 -awned. Principal lemma awn 2-3 mm long overall. Palea 9-12 mm long; 0.9 length of lemma; 2 -veined. Palea keels scaberulous; adorned above. Palea surface glabrous. Palea apex emarginate. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Anthers 3; 3.5-4 mm long; purple.
    Fruits
    Caryopsis with adherent pericarp; 6 mm long; light brown.
    Distribution
    Asia-temperate: China.
    Reference
    Triticeae. Cai & Zhang 2009.

    Distribution

    Native to:

    China North-Central, Qinghai

    Leymus pluriflorus L.B.Cai & Tong L.Zhang appears in other Kew resources:

    First published in Bot. J. Linn. Soc. 159: 344 (2009)

    Accepted by

    • Govaerts, R. (2019). World Checklist of Vascular Plants (WCVP 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 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