1. Family: Poaceae Barnhart
    1. Genus: Elymus L.
      1. Elymus glaucus Buckley

        This species is accepted, and its native range is N. America to NW. Mexico.

    [GB]
    Habit
    Perennial; caespitose; clumped loosely. Culms erect, or geniculately ascending; 50-100 cm long. Ligule an eciliate membrane. Leaf-blades 4-10 mm wide; glaucous. Leaf-blade surface scabrous; rough on both sides.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; bilateral; 8-20 cm long. Rhachis flattened. Spikelet packing broadside to rhachis. Rhachis internodes linear. Rhachis internode tip flat. Spikelets solitary, or in pairs. Fertile spikelets sessile; 1-2 in the cluster.
    Spikelets
    Spikelets comprising 3-5 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 10-20 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 3-5 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 10-20 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes collateral; persistent; similar; shorter than spikelet. Lower glume lanceolate; 8-15 mm long; 1 length of upper glume; coriaceous; without keels; 3-7 -veined. Lower glume surface scabrous; rough on veins. Lower glume apex acute; muticous, or awned; 1 -awned. Lower glume awn 0-6 mm long. Upper glume lanceolate; 8-15 mm long; 0.75-0.8 length of adjacent fertile lemma; coriaceous; without keels; 3-7 -veined. Upper glume surface scabrous; rough on veins. Upper glume apex acute; muticous, or awned; 1 -awned. Upper glume awn 0-6 mm long.
    Florets
    Fertile lemma elliptic to oblong; 6-12 mm long; coriaceous; 5-7 -veined. Lemma surface scabrous. Lemma apex acute; awned; 1 -awned. Principal lemma awn 10-30 mm long overall. 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; hairy at apex.
    Distribution
    North America: Subarctic, western Canada, eastern Canada, northwest USA, north-central USA, northeast USA, southwest USA, south-central USA, southeast USA, and Mexico.
    Reference
    Triticeae. Gr Baja Cal 1994.

    Images

    Distribution

    Native to:

    Alaska, Alberta, Arizona, Arkansas, British Columbia, California, Colorado, Idaho, Illinois, Manitoba, Mexico Northwest, Michigan, Missouri, Montana, Nevada, New Mexico, North Dakota, Northwest Territorie, Oklahoma, Ontario, Oregon, Saskatchewan, South Dakota, Texas, Utah, Washington, Wyoming, Yukon

    Introduced into:

    New York

    Elymus glaucus Buckley appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Nuttall, T. [s.n.] K000674987
    Nuttall, T. [s.n.] K000674988

    First published in Proc. Acad. Nat. Sci. Philadelphia 14: 99 (1862 publ. 1863)

    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.
    • Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006). Catálogo de las Gramíneas de México: 1-671. CONABIO, México city.

    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.
    • Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006). Catálogo de las Gramíneas de México: 1-671. CONABIO, México city.

    Sources

    GrassBase - The Online World Grass Flora
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/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