1. Family: Poaceae Barnhart
    1. Genus: Elymus L.
      1. Elymus hirsutus J.Presl

        This species is accepted, and its native range is Aleutian Islands to W. U.S.A.

    [GB]
    Habit
    Perennial; caespitose. Culms geniculately ascending; 60-120 cm long. Culm-internodes distally glabrous, or pubescent. Leaf-sheath auricles absent, or falcate. Ligule an eciliate membrane; 0.5-1 mm long; erose. Leaf-blades 4-10 mm wide.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; straight, or arcuate; bilateral; 6-10 cm long. Rhachis flattened. Spikelet packing broadside to rhachis. Rhachis internodes linear. Rhachis internode tip flat. Spikelets in pairs. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 2 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 15 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 2 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 15 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes collateral; persistent; similar; shorter than spikelet. Lower glume lanceolate; 5-7 mm long; 1 length of upper glume; coriaceous; without keels; 3-5 -veined. Lower glume apex acute; awned; 1 -awned. Lower glume awn 5-7 mm long. Upper glume lanceolate; 5-7 mm long; coriaceous; without keels; 3-5 -veined. Upper glume apex acute; awned; 1 -awned. Upper glume awn 5-7 mm long.
    Florets
    Fertile lemma lanceolate to oblong; 7-10 mm long; coriaceous; 5-7 -veined. Lemma lateral veins prominent. Lemma surface glabrous, or pubescent; hairy above. Lemma margins ciliate. Lemma apex acute; awned; 1 -awned. Principal lemma awn straight, or curved; 15-20 mm long overall. Palea 1 length of lemma. Palea keels scabrous. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; membranous. Anthers 3; 2-2.5 mm long. Stigmas 2. Ovary pubescent on apex.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    North America: Subarctic, western Canada, and northwest USA.
    Reference
    Triticeae. Fl Pac NW 1994.

    Distribution

    Native to:

    Alaska, Aleutian Is., British Columbia, California, Oregon, Washington

    Elymus hirsutus J.Presl appears in other Kew resources:

    First published in C.B.Presl, Reliq. Haenk. 1: 264 (1830)

    Accepted by

    • 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.
    • Hultén, E.O.G. (1960). Flora of the Aleutian Islands and westernmost Alaska Peninsula: with notes on the flora of Commander Islands, ed. 2: 1-376. Weinheim : J. Cramer ; New York : Hafner Pub. Co.

    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