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

        This species is accepted, and its native range is N. & E. China.

    [GB]
    Habit
    Perennial; caespitose; clumped loosely. Rhizomes short. Culms erect; 30-90 cm long; 3-6 -noded. Leaf-sheaths glabrous on surface, or pubescent; with reflexed hairs. Ligule an eciliate membrane. Leaf-blades 12-20 cm long; 4-9 mm wide. Leaf-blade surface pubescent; hairy adaxially.
    Inflorescences
    Inflorescence composed of racemes. Peduncle 23-35 cm long. Racemes 1; single; straight, or arcuate; bilateral; 7-15 cm long. Rhachis flattened. Spikelet packing broadside to rhachis. Spikelets solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 4-6 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 14-17 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1-2.5 mm long; pubescent. Floret callus pubescent. Floret callus hairs 0.4-0.6 mm long.
    Fertile
    Spikelets comprising 4-6 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 14-17 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1-2.5 mm long; pubescent. Floret callus pubescent. Floret callus hairs 0.4-0.6 mm long.
    Glume
    Glumes persistent; similar. Lower glume lanceolate; 7-8 mm long; coriaceous; without keels; 3-6 -veined. Lower glume surface smooth, or scabrous; rough on veins. Lower glume apex acute, or acuminate. Upper glume lanceolate; 8-10 mm long; coriaceous; without keels; 3-6 -veined. Upper glume surface smooth, or scabrous; rough on veins. Upper glume apex acute, or acuminate.
    Florets
    Fertile lemma lanceolate; 9-10 mm long; coriaceous; 5 -veined. Lemma surface scabrous; rough on veins. Lemma margins scabrous. Lemma apex acuminate; awned; 1 -awned. Principal lemma awn straight, or curved; 10-25 mm long overall. Palea 0.9 length of lemma; 2 -veined. Palea keels ciliate; adorned above. Palea apex obtuse. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Anthers 3; 2.5 mm long; yellow.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    Asia-temperate: China.
    Reference
    Triticeae. Fl China 2005.

    Distribution

    Native to:

    China North-Central, China Southeast, Inner Mongolia

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

    First published in Novon 7: 277 (1997)

    Accepted by

    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.
    • Govaerts, R. (2001). World Checklist of Seed Plants Database in ACCESS E-F: 1-50919.

    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