1. Family: Poaceae Barnhart
    1. Genus: Elymus L.
      1. Elymus nipponicus Jaaska

        This species is accepted, and its native range is N. Korea, Sakhalin to Kuril Islands.

    [GB]
    Habit
    Perennial; caespitose. Culms slender; 60-100 cm long. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane; 0.4-0.7 mm long; truncate. Leaf-blades 10-25 cm long; 3-5 mm wide.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; ascending; arcuate; bilateral; 10-18 cm long. Rhachis flattened. Spikelet packing broadside to rhachis. Rhachis internodes linear. Rhachis internode tip flat. Spikelets appressed; solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 5-7 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 15-20 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes glabrous, or sparsely hairy.
    Fertile
    Spikelets comprising 5-7 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 15-20 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes glabrous, or sparsely hairy.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 6-7 mm long; 0.8-0.9 length of upper glume; coriaceous; without keels; 5 -veined. Lower glume surface pilose. Lower glume apex acuminate. Upper glume lanceolate; 4 mm long; coriaceous; without keels; 7 -veined. Upper glume surface pilose. Upper glume apex acuminate.
    Florets
    Fertile lemma oblong; 7-9 mm long; coriaceous; 5 -veined. Lemma lateral veins ribbed. Lemma surface hispidulous. Lemma apex acute; awned; 1 -awned. Principal lemma awn 10-25 mm long overall. Palea 1 length of lemma. Palea keels ciliate. Palea surface puberulous; hairy on back. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; membranous. Anthers 3; 2-2.5 mm long. Stigmas 2.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    Asia-temperate: eastern Asia.
    Reference
    Triticeae. Koyama 1994.

    Distribution

    Native to:

    Korea, Kuril Is., Sakhalin

    Elymus nipponicus Jaaska appears in other Kew resources:

    First published in Izv. Akad. Nauk Éstonsk. S.S.R., Ser. Biol. 23: 6 (1974)

    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.
    • Govaerts, R. (2001). World Checklist of Seed Plants Database in ACCESS E-F: 1-50919.

    Literature

    Kew Backbone Distributions
    • 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

    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