1. Family: Poaceae Barnhart
    1. Genus: Leymus Hochst.
      1. Leymus chinensis (Trin.) Tzvelev

        This species is accepted, and its native range is Siberia to N. Korea.

    [GB]
    Habit
    Perennial. Rhizomes elongated. Butt sheaths persistent and investing base of culm; with fibrous dead sheaths. Culms 30-100 cm long; 2-3 -noded. Ligule an eciliate membrane; 0.5-0.75 mm long; truncate. Leaf-blades flat, or convolute; 7-20 cm long; 3-5 mm wide; coriaceous; stiff; glaucous. Leaf-blade surface ribbed; scabrous; rough adaxially. Leaf-blade margins scabrous. Leaf-blade apex pungent.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; bilateral; 10-20 cm long. Rhachis flattened; spinulose on margins. Spikelet packing broadside to rhachis. Rhachis internodes linear; 7-15 mm long. Spikelets appressed; in pairs. Fertile spikelets sessile; 2 in the cluster.
    Spikelets
    Spikelets comprising 5-9 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 10-20 mm long; 2.2-2.5 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1-1.5 mm long; smooth.
    Fertile
    Spikelets comprising 5-9 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 10-20 mm long; 2.2-2.5 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1-1.5 mm long; smooth.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume subulate; 0.9 length of upper glume; coriaceous; 1 -veined. Lower glume lateral veins absent. Upper glume subulate; 5-9 mm long; 0.75 length of adjacent fertile lemma; coriaceous; 1 -veined. Upper glume lateral veins absent. Upper glume margins scabrous (above).
    Florets
    Fertile lemma lanceolate; 7-11 mm long; coriaceous; without keel; 5 -veined. Lemma apex acuminate. Palea 2 -veined. Palea keels eciliate, or ciliolate. Apical sterile florets resembling fertile though underdeveloped.
    Distribution
    Asia-temperate: Siberia, Soviet far east, China, Mongolia, and eastern Asia.
    Reference
    Triticeae. Koyama.

    Images

    Distribution

    Native to:

    Altay, Amur, Buryatiya, China North-Central, China Southeast, Chita, Inner Mongolia, Irkutsk, Korea, Krasnoyarsk, Manchuria, Mongolia, Qinghai, Tuva, Xinjiang, Yakutskiya

    Introduced into:

    Khabarovsk, Primorye

    Leymus chinensis (Trin.) Tzvelev appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    illegible [845] K001065463
    Turczaninow, N. S. [s.n.] K001065461
    Shearse [s.n.], China Elymus chinensis K000674904 Unknown type material

    First published in Trudy Bot. Inst. Akad. Nauk S.S.S.R., Rast. Tsentral. Azii 4: 205 (1968)

    Accepted by

    • Chang, C.S., Kim, H. & Chang, K.S. (2014). Provisional checklist of vascular plants for the Korea peninsula flora (KPF): 1-660. DESIGNPOST.
    • 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.
    • 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.

    Literature

    Kew Backbone Distributions
    • Grubov, V.I. (2008). Key to the vascular plants of Mongolia (with an atlas) 2: 1-503. Academy of Sciences, Mongolian People's Republic, Ulaan Bator.
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.
    • Malyschev, L.I. & Peschkova, G.A. (eds.) (2001). Flora of Siberia 2: 1-362. Scientific Publishers, Inc., Enfield, Plymouth.
    • Lee, W.T. (1996). Lineamenta Florae Koreae: 1-1688. Soul T'ukpyolsi: Ak'ademi Sojok.
    • 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