1. Family: Poaceae Barnhart
    1. Genus: Elymus L.
      1. Elymus albicans (Scribn. & J.G.Sm.) Á.Löve

        This species is accepted, and its native range is Canada to NW. & W. Central U.S.A.

    [GB]
    Habit
    Perennial; culms solitary, or caespitose. Rhizomes elongated; wiry. Culms 40-80 cm long. Culm-internodes thin-walled. Leaf-sheaths pubescent, or pilose. Leaf-sheath auricles falcate; 1-1.5 mm long. Ligule an eciliate membrane; 0.5 mm long; erose. Leaf-blades involute; 2-4 mm wide; stiff; glaucous. Leaf-blade surface scaberulous; rough adaxially, or on both sides.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; bilateral; 4-20 cm long. Rhachis flattened. Spikelet packing broadside to rhachis. Rhachis internodes linear. Rhachis internode tip flat. Spikelets solitary, or in pairs. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 4-10 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 10-15 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes pubescent.
    Fertile
    Spikelets comprising 4-10 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 10-15 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes pubescent.
    Glume
    Glumes collateral; persistent; similar; shorter than spikelet. Lower glume lanceolate; 10 mm long; 1 length of upper glume; coriaceous; without keels; 5-7 -veined. Lower glume surface pubescent. Lower glume apex setaceously attenuate. Upper glume lanceolate; 10 mm long; coriaceous; without keels; 3-5 -veined. Upper glume apex acute.
    Florets
    Fertile lemma lanceolate to oblong; 8-10 mm long; coriaceous; 5-7 -veined. Lemma apex acute; awned; 1 -awned. Principal lemma awn curved; spreading; 10-15 mm long overall. Palea 1 length of lemma. Palea keels scabrous. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; membranous. Anthers 3. Stigmas 2. Ovary pubescent on apex.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    North America: western Canada, northwest USA, north-central USA, and southwest USA.
    Reference
    Triticeae. Man Gr US 2004.

    Distribution

    Native to:

    Alberta, British Columbia, Colorado, Idaho, Montana, Nebraska, North Dakota, Ontario, Saskatchewan, South Dakota, Utah, Washington, Wyoming

    Elymus albicans (Scribn. & J.G.Sm.) Á.Löve appears in other Kew resources:

    First published in Taxon 29: 166 (1980)

    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