1. Family: Poaceae Barnhart
    1. Genus: Elymus L.
      1. Elymus dolichatherus (Keng) S.L.Chen

        This species is accepted, and its native range is Qinghai to Inner Mongolia.

    [GB]
    Habit
    Perennial; caespitose. Culms erect; 60-90 cm long; 1-2 mm diam.; 4-5 -noded; with 0.5 of their length below uppermost node. Leaf-sheaths 11-17 cm long; mostly shorter than adjacent culm internode, or subequal to internodes; without keel, or keeled; striately veined; glabrous on surface, or pilose; outer margin hairy. Ligule an eciliate membrane; 0.5 mm long; entire, or erose; truncate. Leaf-blades flat, or involute; 10-20 cm long; 3-7 mm wide. Leaf-blade surface pilose; densely hairy; hairy adaxially.
    Inflorescences
    Inflorescence composed of racemes. Racemes 10-17; single; erect; bilateral; 5-20 cm long. Rhachis flattened; scabrous on margins. Spikelet packing broadside to rhachis; regular; 2 -rowed. Rhachis internodes 8-10 mm long (lowest -30). Spikelets solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 3-6 fertile florets; with diminished florets at the apex. Spikelets laterally compressed; 13-19 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 2 mm long; pubescent. Floret callus pubescent.
    Fertile
    Spikelets comprising 3-6 fertile florets; with diminished florets at the apex. Spikelets laterally compressed; 13-19 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 2 mm long; pubescent. Floret callus pubescent.
    Glume
    Glumes persistent; similar; subequal in width; shorter than spikelet. Lower glume lanceolate, or oblong; 6-8 mm long; coriaceous; without keels; 3-5 -veined. Lower glume surface asperulous; rough on veins. Lower glume apex acuminate; muticous. Upper glume lanceolate, or oblong; 7-10 mm long; coriaceous; without keels; 3-5 -veined. Upper glume surface asperulous; rough on veins. Upper glume apex acuminate; muticous.
    Florets
    Fertile lemma lanceolate; 9-10 mm long; coriaceous; without keel; 5 -veined. Lemma surface scaberulous; puberulous; hairy below. Lemma apex awned; 1 -awned. Principal lemma awn straight; 26-32 mm long overall. Palea 1 length of lemma; 2 -veined. Palea keels scaberulous. Palea surface puberulous; hairy on back; hairy above. Palea apex emarginate, or obtuse. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; membranous. Anthers 3; 1.8-2 mm long. Stigmas 2. Ovary pubescent on apex.
    Fruits
    Caryopsis with adherent pericarp; 3 mm long; hairy at apex; apex unappendaged. Hilum linear.
    Distribution
    Asia-temperate: China.
    Reference
    Triticeae. Chen 2001.

    Distribution

    Native to:

    China South-Central, Inner Mongolia, Qinghai

    Elymus dolichatherus (Keng) S.L.Chen appears in other Kew resources:

    First published in Fl. China 22: 423 (2006)

    Accepted by

    • Govaerts, R.H.A. (2011). World checklist of selected plant families published update Facilitated by the Trustees of the Royal Botanic Gardens, Kew.
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.

    Literature

    Kew Backbone Distributions
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.

    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