1. Family: Poaceae Barnhart
    1. Genus: Elymus L.
      1. Elymus submuticus (Hook.) Smyth

        This species is accepted, and its native range is Canada to U.S.A.

    [GB]
    Habit
    Perennial. Culms erect, or geniculately ascending; 100 cm long. Culm-internodes distally glabrous. Culm-nodes glabrous. Leaf-sheaths longer than adjacent culm internode; glabrous on surface. Leaf-sheath auricles falcate. Ligule absent. Leaf-blades 15-20 cm long; 2-4 mm wide. Leaf-blade surface scabrous; rough on both sides.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; erect; bilateral; 10-12 cm long. Rhachis flattened. Spikelet packing broadside to rhachis. Rhachis internodes linear. Spikelets in pairs. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 2-4 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 13-17 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 4-7 mm long; scaberulous.
    Fertile
    Spikelets comprising 2-4 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 13-17 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 4-7 mm long; scaberulous.
    Glume
    Glumes collateral; persistent; similar; reaching apex of florets; shiny. Lower glume lanceolate; 13-17 mm long; 1 length of upper glume; coriaceous; without keels; 3-5 -veined. Lower glume surface scabrous; rough above and on veins. Lower glume apex acuminate. Upper glume lanceolate; 13-17 mm long; coriaceous; without keels; 3-5 -veined. Upper glume surface scabrous; rough on veins. Upper glume margins scaberulous. Upper glume apex acute.
    Florets
    Fertile lemma lanceolate, or oblong; 8-10 mm long; coriaceous; 3-5 -veined. Lemma surface hispidulous; hairy above. Lemma apex acuminate; awned; 1 -awned. Principal lemma awn 1-2 mm long overall. Palea 1 length of lemma. Palea keels ciliolate. Apical sterile florets resembling fertile though underdeveloped.
    Distribution
    North America: western Canada and northwest USA.
    Reference
    Triticeae. Piper 2004.

    Distribution

    Native to:

    Alberta, British Columbia, Colorado, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Manitoba, Masachusettes, Minnesota, Missouri, Montana, Nebraska, New Mexico, New York, North Dakota, Ohio, Oklahoma, Ontario, Pennsylvania, Québec, Rhode I., Saskatchewan, South Dakota, Tennessee, Utah, Washington, Wisconsin, Wyoming

    Elymus submuticus (Hook.) Smyth appears in other Kew resources:

    First published in Trans. Kansas Acad. Sci. 25: 99 (1913)

    Accepted by

    • Flora of North America Editorial Committee (2007). Flora of North America North of Mexico 24: 1-908. Oxford University Press, New York, Oxford.
    • 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
    • Flora of North America Editorial Committee (2007). Flora of North America North of Mexico 24: 1-908. Oxford University Press, New York, Oxford.

    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