1. Family: Poaceae Barnhart
    1. Genus: Leymus Hochst.
      1. Leymus pseudoracemosus C.Yen & J.L.Yang

        This species is accepted, and its native range is Qinghai.

    [GB]
    Habit
    Perennial; culms solitary. Rhizomes elongated. Butt sheaths persistent and investing base of culm; with fibrous dead sheaths. Culms erect; 60-90 cm long; 5-6 mm diam.; 2-3 -noded. Culm-internodes distally pubescent. Leaf-sheaths longer than adjacent culm internode; glabrous on surface. Ligule an eciliate membrane; 3 mm long. Leaf-blades flat, or involute; 15-40 cm long; 5-7 mm wide; coriaceous; stiff; grey-green. Leaf-blade surface smooth, or scaberulous; rough on both sides; puberulous to hirsute; hairy adaxially.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; linear; bilateral; 12-25 cm long; 20-30 mm wide; with branchlets at base of longer racemes; secondary branches racemulose (3-4cm long). Rhachis pubescent on surface; ciliate on margins. Spikelet packing broadside to rhachis. Rhachis internodes linear; 2.5-10 mm long. Spikelets in threes, or clustered at each node. Fertile spikelets sessile; 3-5 in the cluster.
    Spikelets
    Spikelets comprising 5-10 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 13-20 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1-1.8 mm long; pubescent. Floret callus pilose. Floret callus hairs 1-1.5 mm long.
    Fertile
    Spikelets comprising 5-10 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 13-20 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1-1.8 mm long; pubescent. Floret callus pilose. Floret callus hairs 1-1.5 mm long.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 10-12 mm long; 0.75 length of upper glume; coriaceous; much thinner on margins; 3 -veined. Lower glume lateral veins obscure. Lower glume margins ciliate. Lower glume apex acuminate; awned; 1 -awned. Lower glume awn 1-1.7 mm long. Upper glume lanceolate; 13-16 mm long; 1.2-1.7 length of adjacent fertile lemma; coriaceous; with membranous margins; without keels; 3 -veined. Upper glume lateral veins obscure. Upper glume margins ciliate. Upper glume apex acuminate; awned; 1 -awned. Upper glume awn 1-1.7 mm long.
    Florets
    Fertile lemma lanceolate; 9-13 mm long; coriaceous; much thinner on margins; without keel; 5-7(-10) -veined. Lemma lateral veins obscure. Lemma surface pilose. Lemma margins ciliate. Lemma hairs 1 mm long. Lemma apex acuminate; mucronate, or awned; 1 -awned. Principal lemma awn 0.2-1.5 mm long overall. Palea 1 length of lemma; 2 -veined. Palea keels ciliate; adorned above. Palea surface pilose; hairy on margins. Palea apex dentate; 2 -fid. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Anthers 3; 3-5 mm long; yellow.
    Fruits
    Caryopsis with adherent pericarp; ellipsoid; 4.5-5 mm long; dark brown; hairy at apex.
    Distribution
    Asia-temperate: China.
    Reference
    Triticeae. Yen & Yang 1996.

    Distribution

    Native to:

    Qinghai

    Leymus pseudoracemosus C.Yen & J.L.Yang appears in other Kew resources:

    First published in Acta Bot. Yunnan. 5: 275 (1983)

    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