1. Family: Poaceae Barnhart
    1. Genus: Elymus L.
      1. Elymus tilcarensis (J.H.Hunz.) Á.Löve

        This species is accepted, and its native range is NW. Argentina.

    [GB]
    Habit
    Perennial; caespitose. Butt sheaths purple. Basal innovations intravaginal. Culms erect, or geniculately ascending; 40-80 cm long; 2-4 -noded. Culm-nodes glabrous. Leaf-sheaths striately veined; smooth; glabrous on surface. Leaf-sheath auricles falcate. Ligule an eciliate membrane; 0.5 mm long; truncate. Leaf-blades 10-15 cm long; 2-5.5 mm wide. Leaf-blade surface ribbed; grooved adaxially; scabrous; rough adaxially, or on both sides. Leaf-blade apex acuminate.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; bilateral; 6-16 cm long; bearing 7-25 fertile spikelets on each. Rhachis ciliate on margins. Spikelet packing broadside to rhachis. Rhachis internodes linear; 4-27 mm long. Rhachis internode tip flat. Spikelets solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 3-4 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 12-18 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1.4-2.2 mm long.
    Fertile
    Spikelets comprising 3-4 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 12-18 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1.4-2.2 mm long.
    Glume
    Glumes collateral; persistent; similar; reaching apex of florets. Lower glume lanceolate; 10-15.5 mm long; 1 length of upper glume; coriaceous; without keels; 5-7 -veined. Lower glume lateral veins prominent. Lower glume apex acuminate; awned; 1 -awned. Lower glume awn 0.9-2.3 mm long. Upper glume lanceolate; 10-15.5 mm long; coriaceous; without keels; 5-7 -veined. Upper glume lateral veins prominent. Upper glume apex acuminate; awned; 1 -awned. Upper glume awn 0.9-2.3 mm long.
    Florets
    Fertile lemma lanceolate; 11-16.5 mm long; coriaceous; 5-7 -veined. Lemma surface scabrous; rough above. Lemma apex attenuate; awned; 1 -awned. Principal lemma awn 1.5-3 mm long overall. Palea keels ciliolate. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; membranous. Anthers 3; 1.8-2.4 mm long. Stigmas 2. Ovary pubescent on apex.
    Fruits
    Caryopsis with adherent pericarp; lanceolate; sulcate on hilar side; 5-6 mm long; hairy at apex.
    Distribution
    South America: southern South America.
    Reference
    Triticeae. Hunziker 1997.

    Distribution

    Native to:

    Argentina Northwest

    Elymus tilcarensis (J.H.Hunz.) Á.Löve appears in other Kew resources:

    First published in Feddes Repert. 95: 473 (1984)

    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