1. Family: Poaceae Barnhart
    1. Genus: Elymus L.
      1. Elymus arcuatus (Golosk.) Tzvelev

        This species is accepted, and its native range is Central Asia.

    [GB]
    Habit
    Perennial; caespitose; clumped densely. Butt sheaths persistent and investing base of culm; with compacted dead sheaths. Culms 40-50 cm long. Leaf-sheaths smooth; glabrous on surface. Leaf-sheath auricles falcate. Ligule an eciliate membrane. Leaf-blades conduplicate; 1-2 mm wide; glaucous. Leaf-blade surface scaberulous; rough adaxially. Leaf-blade apex acuminate.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; drooping; bilateral; 6-10 cm long. Rhachis flattened; scaberulous on margins. Spikelet packing broadside to rhachis; lax. Rhachis internodes linear; 3-4 mm long. Spikelets solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 2-3 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 15-18 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 2-3 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 15-18 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 6-8 mm long; 1 length of upper glume; coriaceous; without keels; 3 -veined. Lower glume surface pubescent; hairy on veins. Lower glume apex acuminate; awned; 1 -awned. Lower glume awn 3-5 mm long. Upper glume lanceolate; 6-8 mm long; 0.5-0.66 length of adjacent fertile lemma; coriaceous; without keels; 3 -veined. Upper glume surface pubescent; hairy on veins. Upper glume apex acuminate; awned; 1 -awned. Upper glume awn 3-5 mm long.
    Florets
    Fertile lemma lanceolate; 10-15 mm long; coriaceous; 5 -veined. Lemma surface scaberulous. Lemma apex acuminate; awned; 1 -awned. Principal lemma awn 10-20 mm long overall. Palea keels ciliolate. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; membranous. Anthers 3; 3 mm long. Stigmas 2. Ovary pubescent on apex.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    Asia-temperate: Soviet Middle Asia.
    Reference
    Triticeae. Golosk 1995.

    Distribution

    Native to:

    Kazakhstan

    Elymus arcuatus (Golosk.) Tzvelev appears in other Kew resources:

    First published in Novosti Sist. Vyssh. Rast. 9: 61 (1972)

    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.

    Literature

    Kew Backbone Distributions
    • Pavlov, N.V. (ed.) (1956). Flora Kazakhstana 1: 1-354. Alma-Ata, Izd-vo Akademii nauk Kazakhskoi SSR.

    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