1. Family: Poaceae Barnhart
    1. Genus: Elymus L.
      1. Elymus diversiglumis Scribn. & C.R.Ball

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

    [GB]
    Habit
    Perennial; caespitose. Culms 70-150 cm long. Leaf-sheaths mostly shorter than adjacent culm internode. Leaf-sheath auricles falcate. Ligule an eciliate membrane. Leaf-blades 15-40 cm long; 5-15 mm wide. Leaf-blade surface glabrous, or pubescent; hairy adaxially.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; flexuous; bilateral; 10-20 cm long. Rhachis flattened; ciliate on margins. Spikelet packing broadside to rhachis. Rhachis internodes oblong; 3-10 mm long. 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; 15-20 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 2-4 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 15-20 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume subulate; 2-20 mm long; 1 length of upper glume. Upper glume subulate; 2-20 mm long.
    Florets
    Fertile lemma lanceolate; 7-12 mm long; coriaceous; without keel; 5 -veined. Lemma surface pilose. Lemma apex acute; awned; 1 -awned. Principal lemma awn 15-40 mm long overall. Palea 7.5-9 mm long. Palea surface pilose; hairy on back. Palea apex obtuse. Apical sterile florets resembling fertile though underdeveloped.
    Distribution
    North America: western Canada, eastern Canada, and northwest USA.
    Reference
    Triticeae. Gleason 2004.

    Distribution

    Native to:

    Arkansas, Illinois, Iowa, Manitoba, Michigan, Minnesota, Missouri, Montana, North Dakota, Oklahoma, Ontario, Saskatchewan, South Dakota, Wisconsin, Wyoming

    Elymus diversiglumis Scribn. & C.R.Ball appears in other Kew resources:

    First published in Bull. Div. Agrostol. U.S.D.A. 24: 48 (1901)

    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