1. Family: Poaceae Barnhart
    1. Genus: Leymus Hochst.
      1. Leymus sibiricus (Trautv.) J.L.Yang & C.Yen

        This species is accepted, and its native range is Siberia to Russian Far East.

    [GB]
    Habit
    Perennial. Rhizomes elongated. Culms 25-100 cm long. Ligule an eciliate membrane. Leaf-blades 10-30 cm long; 2-7 mm wide. Leaf-blade surface scabrous; rough adaxially; glabrous, or pubescent; sparsely hairy; hairy adaxially.
    Inflorescences
    Inflorescence composed of racemes. Peduncle glabrous, or pubescent above. Racemes 1; single; bilateral; 5.5-13 cm long. Rhachis pubescent on surface. Spikelet packing broadside to rhachis; lax. Spikelets solitary, or in pairs. Fertile spikelets sessile; 1-2 in the cluster.
    Spikelets
    Spikelets comprising 2-3 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; dorsally compressed; 9-12 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 2-3 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; dorsally compressed; 9-12 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes both absent or obscure, or two; persistent; similar; shorter than spikelet. Lower glume subulate; 0-5 mm long; 1 length of upper glume; 1 -veined. Lower glume lateral veins absent. Lower glume surface scabrous. Upper glume subulate; 0-5 mm long; 1-3 -veined. Upper glume lateral veins absent, or distinct.
    Florets
    Fertile lemma lanceolate; 7-9 mm long; coriaceous; without keel; 5 -veined. Lemma surface glabrous, or puberulous. Lemma apex attenuate; awned; 1 -awned. Principal lemma awn 3-5 mm long overall. Palea 1 length of lemma. Palea keels ciliolate. Palea apex dentate; 2 -fid.
    Flowers
    Lodicules 2. Anthers 3; 4-5 mm long. Ovary pubescent on apex.
    Fruits
    Caryopsis with adherent pericarp; hairy at apex.
    Distribution
    Asia-temperate: Siberia and Soviet far east.
    Reference
    Triticeae. Fl USSR 1994.

    Images

    Distribution

    Native to:

    Altay, Buryatiya, Chita, Irkutsk, Khabarovsk, Krasnoyarsk, Magadan, Yakutskiya

    Leymus sibiricus (Trautv.) J.L.Yang & C.Yen appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 1996 Czekanowski [s.n.] Hystrix sibirica K000674855 isolectotype

    First published in J. Syst. Evol. 47: 82 (2009)

    Accepted by

    • Govaerts, R. (2019). World Checklist of Vascular Plants (WCVP Database) The Board of Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions
    • Malyschev, L.I. & Peschkova, G.A. (eds.) (2001). Flora of Siberia 2: 1-362. Scientific Publishers, Inc., Enfield, Plymouth.
    • Kharkevich, S.S., Probatova, N.S. & Novikov, V.S. (1985). Sosudistye rasteniia sovetskogo Dal’nego Vostoka 1: 1-383. Izd-vo "Nauka," Leningradskoe otd-nie, Leningrad.

    Sources

    GrassBase - The Online World Grass Flora
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/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