1. Family: Poaceae Barnhart
    1. Genus: Leymus Hochst.
      1. Leymus innovatus (Beal) Pilg.

        This species is accepted, and its native range is Subarctic America to NW. & N. Central U.S.A.

    [GB]
    Habit
    Perennial. Rhizomes elongated. Culms 40-80 cm long. Leaf-sheath oral hairs lacking. Leaf-sheath auricles falcate. Ligule an eciliate membrane; 1 mm long. Leaf-blades involute; 5-25 cm long; 2-4 mm wide; stiff. Leaf-blade surface scaberulous; rough abaxially.
    Inflorescences
    Inflorescence composed of racemes. Peduncle pubescent above. Racemes 1; single; erect; linear, or oblong; bilateral; 4-9 cm long. Rhachis flattened. Spikelet packing broadside to rhachis. Spikelets in pairs. Fertile spikelets sessile; 2 in the cluster.
    Spikelets
    Spikelets comprising 3-5 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 12-15 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite.
    Fertile
    Spikelets comprising 3-5 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 12-15 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite.
    Glume
    Glumes collateral; persistent; similar; shorter than spikelet. Lower glume subulate; 2-7 mm long; 1 length of upper glume. Lower glume surface pubescent. Upper glume subulate; 2-7 mm long; 0.25-0.5 length of adjacent fertile lemma. Upper glume surface pubescent.
    Florets
    Fertile lemma elliptic; 7-9 mm long; coriaceous; without keel; 5 -veined. Lemma surface pubescent, or villous. Lemma apex acuminate; awned; 1 -awned. Principal lemma awn 1-4 mm long overall. Palea 1 length of lemma; 2 -veined. Palea keels ciliolate. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; membranous. Anthers 3; 5 mm long. Stigmas 2. Ovary pubescent on apex.
    Fruits
    Caryopsis with adherent pericarp. Hilum linear.
    Distribution
    North America: Subarctic, western Canada, eastern Canada, northwest USA, and north-central USA.
    Reference
    Triticeae. WDC.

    Images

    Distribution

    Native to:

    Alaska, Alberta, British Columbia, Colorado, Manitoba, Montana, Northwest Territorie, Ontario, Saskatchewan, South Dakota, Wyoming, Yukon

    Leymus innovatus (Beal) Pilg. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Cody, W.J. [10101], Northwest Territories K001065452 paratype

    First published in Bot. Jahrb. Syst. 74: 6 (1947)

    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

    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 2018. 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 2018. 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