1. Family: Poaceae Barnhart
    1. Genus: Leymus Hochst.
      1. Leymus ordensis Peschkova

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

    [GB]
    Habit
    Perennial; caespitose; clumped densely. Culms erect; 50-90 cm long. Culm-internodes distally glabrous. Ligule an eciliate membrane. Leaf-blades flat, or convolute; 2-4 mm wide; coriaceous; stiff. Leaf-blade surface scabrous; glabrous.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; bilateral; 8-15 cm long. Rhachis flattened. Spikelet packing broadside to rhachis; lax. Spikelets solitary, or in pairs, or in threes. Fertile spikelets sessile; 1-3 in the cluster.
    Spikelets
    Spikelets comprising 4-6 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 13 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; laterally compressed; 13 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume subulate; 4-5 mm long; 0.7-0.8 length of upper glume; 1 -veined. Lower glume lateral veins excurrent. Upper glume subulate; 5-6 mm long; 0.6 length of adjacent fertile lemma; 1 -veined. Upper glume lateral veins excurrent.
    Florets
    Fertile lemma elliptic; 8-10 mm long; coriaceous; without keel; 5 -veined. Lemma surface pilose; hairy all along, or above. Lemma apex attenuate; muticous, or awned; 1 -awned. Principal lemma awn 0.5-2 mm long overall. Palea 2 -veined. Palea keels scabrous. Apical sterile florets resembling fertile though underdeveloped.
    Distribution
    Asia-temperate: Siberia.
    Reference
    Triticeae. Peshkova 2005.

    Distribution

    Native to:

    Altay, Irkutsk, Krasnoyarsk, Tuva

    Leymus ordensis Peschkova appears in other Kew resources:

    First published in Bot. Zhurn. (Moscow & Leningrad) 70: 1554 (1985)

    Accepted by

    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Malyschev, L.I. & Peschkova, G.A. (eds.) (2001). Flora of Siberia 2: 1-362. Scientific Publishers, Inc., Enfield, Plymouth.

    Literature

    Kew Backbone Distributions
    • Malyschev, L.I. & Peschkova, G.A. (eds.) (2001). Flora of Siberia 2: 1-362. Scientific Publishers, Inc., Enfield, Plymouth.

    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