1. Family: Poaceae Barnhart
    1. Genus: Elymus L.
      1. Elymus tsukushiensis Honda

        This species is accepted, and its native range is S. Russian Far East to China and Temp. E. Asia.

    [GB]
    Habit
    Perennial; caespitose. Culms erect, or geniculately ascending; 30-100 cm long; 2-3.5 mm diam.; 4-6 -noded. Leaves basal and cauline. Leaf-sheaths glabrous on surface, or pubescent; outer margin hairy. Ligule an eciliate membrane; 0.5-0.7 mm long; truncate. Leaf-blades 15-40 cm long; 3-10 mm wide. Leaf-blade surface scaberulous. Leaf-blade apex acute.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; ascending; bilateral; 10-25 cm long; 8-12 mm wide. Rhachis flattened; scabrous on margins; glabrous on margins, or ciliate on margins. Spikelet packing broadside to rhachis. Rhachis internodes linear; 10-20 mm long. Rhachis internode tip flat. Spikelets solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 5-10 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 15-25 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 2-2.5 mm long; pubescent.
    Fertile
    Spikelets comprising 5-10 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 15-25 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 2-2.5 mm long; pubescent.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 4-6 mm long; 0.75-0.8 length of upper glume; coriaceous; without keels; 3 -veined. Lower glume primary vein scabrous. Lower glume apex acute; muticous, or awned; 1 -awned. Lower glume awn 2-5 mm long. Upper glume lanceolate; 5-8 mm long; coriaceous; without keels; 5 -veined. Upper glume primary vein scabrous. Upper glume apex acute; muticous, or awned; 1 -awned. Upper glume awn 2-5 mm long.
    Florets
    Fertile lemma oblong; 6-10 mm long; coriaceous; much thinner on margins; 5 -veined. Lemma lateral veins ribbed. Lemma surface glabrous, or pilose. Lemma apex acute; awned; 1 -awned. Principal lemma awn straight, or flexuous; 20-40 mm long overall. Palea lanceolate. Palea keels approximate (above); winged; narrowly winged; ciliolate. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; membranous. Anthers 3. Stigmas 2.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    Asia-temperate: China and eastern Asia.
    Reference
    Triticeae. Koyama 1994.

    Images

    Distribution

    Native to:

    China North-Central, China South-Central, China Southeast, Inner Mongolia, Japan, Korea, Kuril Is., Manchuria, Nansei-shoto, Primorye, Qinghai, Taiwan, Tibet, Xinjiang

    Elymus tsukushiensis Honda appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Nakashima, K. [s.n.], Kyushu K000674960 isotype
    Dorsett, P. H. [5845], Manchuria Elymus kamoji K000674959

    First published in Bot. Mag. (Tokyo) 50: 391 (1936)

    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.
    • Probatova, N.S. & al. (2006). Flora Rossi?skogo Dal'nego Vostoka. Dopolneniya i izmeneniya k izdaniyu Sosudistye rasteniya sovetskogo Dal'nego Vostoka t. 1-8 (1985-1996): 1-454. Russian academy of sciences Far Eastern branch.

    Literature

    Kew Backbone Distributions
    • Jung, M.J. & Chen, C.W. (2013). Elymus L. (Poaceae) in Taiwan and related species in neighbor areas Taiwania 58: 53-60.
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.
    • Probatova, N.S. & al. (2006). Flora Rossi?skogo Dal'nego Vostoka. Dopolneniya i izmeneniya k izdaniyu Sosudistye rasteniya sovetskogo Dal'nego Vostoka t. 1-8 (1985-1996): 1-454. Russian academy of sciences Far Eastern branch.
    • Lee, W.T. (1996). Lineamenta Florae Koreae: 1-1688. Soul T'ukpyolsi: Ak'ademi Sojok.
    • Koyama, T. (1987). Grasses of Japan and its neighboring regions: an identification manual: 1-570. Kodansha, Tokyo, Japan.
    • Walker, E.H. (1976). Flora of Okinawa and the southern Ryukyu islands: 1-1159. Smithsonian Institution Press, Washington D.C., U.S.A.

    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