1. Family: Poaceae Barnhart
    1. Genus: Elymus L.
      1. Elymus villosus Muhl. ex Willd.

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

    [GB]
    Habit
    Perennial; caespitose. Culms geniculately ascending; 60-100 cm long. Leaf-sheaths glabrous on surface, or pilose. Ligule an eciliate membrane. Leaf-blades 10-20 cm long; 3-10 mm wide. Leaf-blade surface pubescent; hairy adaxially.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; arcuate; bilateral; 5-12 cm long. Rhachis flattened; ciliate on margins. Spikelet packing broadside to rhachis. Rhachis internodes linear. Rhachis internode tip flat. Spikelets in pairs. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets cuneate; laterally compressed; 8-10 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets cuneate; laterally compressed; 8-10 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes collateral; persistent; similar. Lower glume subulate; 12-20 mm long; 1 length of upper glume; coriaceous; 2 -veined. Lower glume surface pilose. Upper glume subulate; 12-20 mm long; coriaceous; 3-5 -veined. Upper glume surface pilose.
    Florets
    Fertile lemma elliptic; 7-9 mm long; 1.2 mm wide; coriaceous; 5-7 -veined. Lemma surface pilose. Lemma apex acute; awned; 1 -awned. Principal lemma awn straight; 10-30 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: eastern Canada, northwest USA, north-central USA, northeast USA, south-central USA, and southeast USA.
    Reference
    Triticeae. Man US Gr 1994.

    Distribution

    Native to:

    Alabama, Arkansas, Connecticut, Delaware, District of Columbia, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Maryland, Masachusettes, Michigan, Minnesota, Mississippi, Missouri, Nebraska, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Ontario, Pennsylvania, Québec, Rhode I., South Carolina, South Dakota, Tennessee, Texas, Vermont, Virginia, West Virginia, Wisconsin, Wyoming

    Elymus villosus Muhl. ex Willd. appears in other Kew resources:

    First published in Enum. Pl.: 131 (1809)

    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.

    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