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  1. Family: Poaceae Barnhart
    1. Genus: Leymus Hochst.
      1. Species: Leymus duthiei (Stapf ex Hook.f.) C.Yen, J.L.Yang & B.R.Baum
        1. Leymus duthiei var. japonicus (Hack.) C.Yen, J.L.Yang & B.R.Baum

        This variety is accepted, and its native range is Japan.

    [GB]
    Habit
    Perennial; caespitose. Rhizomes short. Culms 60-80 cm long; 1-1.5 mm diam. Culm-internodes distally glabrous. Ligule an eciliate membrane. Leaf-blades 8-20 cm long; 8-15 mm wide; dark green. Leaf-blade apex attenuate.
    Inflorescences
    Inflorescence composed of racemes. Peduncle glabrous. Racemes 1; single; arcuate; bilateral; 8-12 cm long. Rhachis glabrous on surface; glabrous on margins. Spikelet packing broadside to rhachis; lax. Spikelets solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; dorsally compressed; 9-11 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; dorsally compressed; 9-11 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume subulate; 0.5-5 mm long; 1 length of upper glume; 1 -veined. Lower glume lateral veins absent. Lower glume surface scabrous. Upper glume subulate; 0.5-5 mm long; 1 -veined. Upper glume lateral veins absent.
    Florets
    Fertile lemma lanceolate, or oblong; 9-11 mm long; coriaceous; without keel; 5 -veined. Lemma margins pubescent. Lemma apex attenuate; awned; 1 -awned. Principal lemma awn 15-25 mm long overall. Palea 1 length of lemma. Palea keels ciliolate. Palea apex dentate; 2 -fid.
    Flowers
    Lodicules 2. Anthers 3. Ovary pubescent on apex.
    Fruits
    Caryopsis with adherent pericarp; hairy at apex.
    Distribution
    Asia-temperate: eastern Asia.
    Reference
    Triticeae. Koyama 1994.

    Distribution

    Synonyms

    Other Data

    Leymus duthiei var. japonicus (Hack.) C.Yen, J.L.Yang & B.R.Baum appears in other Kew resources:

    Bibliography

    First published in J. Syst. Evol. 47: 83 (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

    • Koyama, T. (1987). Grasses of Japan and its neighboring regions: an identification manual: 1-570. Kodansha, Tokyo, Japan.

    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