1. Family: Poaceae Barnhart
    1. Genus: Elymus L.
      1. Elymus patagonicus Speg.

        This species is accepted, and its native range is S. Chile to W. Central & S. Argentina.

    [GB]
    Habit
    Perennial; caespitose. Basal innovations extravaginal, or intravaginal. Culms erect, or geniculately ascending; 60-150 cm long; 4-6 -noded. Leaf-sheaths glabrous on surface, or puberulous. Ligule an eciliate membrane; 1.1-1.5 mm long; truncate. Leaf-blades flat (rarely), or conduplicate, or convolute; 15-35 cm long; 3-7 mm wide. Leaf-blade surface pubescent; hairy adaxially, or on both sides. Leaf-blade apex acuminate.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; bilateral; 6-11 cm long. Rhachis fragile at the nodes; glabrous on margins. Spikelet packing broadside to rhachis. Rhachis internodes linear; 3-4.5 mm long; falling with spikelet above. Rhachis internode tip flat. Spikelets in pairs, or in threes. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 1-2 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 6-7 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 1-2 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 6-7 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume linear; 4-6 mm long; 1 length of upper glume; coriaceous; without keels; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acute; awned; 1 -awned. Lower glume awn 2-3 mm long. Upper glume linear; 4-6 mm long; 0.66 length of adjacent fertile lemma; coriaceous; without keels; 2-3 -veined. Upper glume apex acute; awned; 1 -awned. Upper glume awn 2-3 mm long.
    Florets
    Fertile lemma lanceolate; 7-9 mm long; coriaceous; 5 -veined. Lemma apex emarginate; awned; 1 -awned. Principal lemma awn 2-3(-5) mm long overall. Palea 0.9 length of lemma. Palea keels ciliolate. Apical sterile florets rudimentary.
    Flowers
    Lodicules 2; membranous. Anthers 3; 2.5-3 mm long. Stigmas 2. Ovary pubescent on apex.
    Fruits
    Caryopsis with adherent pericarp; 4-4.5 mm long; dark brown.
    Distribution
    South America: southern South America.
    Reference
    Triticeae. Fl Pat 2000.

    Distribution

    Native to:

    Argentina Northwest, Argentina South, Chile South

    Elymus patagonicus Speg. appears in other Kew resources:

    First published in Revista Fac. Agron. Univ. Nac. La Plata 3: 630 (1897)

    Accepted by

    • Zuloaga, F.O., Morrone, O. , Belgrano, M.J., Marticorena, C. & Marchesi, E. (eds.) (2008). Catálogo de las Plantas Vasculares del Cono Sur Monographs in Systematic Botany from the Missouri Botanical Garden 107: 1-3348.
    • 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
    • Zuloaga, F.O., Morrone, O. , Belgrano, M.J., Marticorena, C. & Marchesi, E. (eds.) (2008). Catálogo de las Plantas Vasculares del Cono Sur Monographs in Systematic Botany from the Missouri Botanical Garden 107: 1-3348.

    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