1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida sayapensis Caro

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

    [GB]
    Habit
    Perennial; caespitose. Basal innovations intravaginal; subterete. Culms erect; 30-50 cm long; 2-3 -noded. Culm-nodes glabrous. Lateral branches lacking. Leaf-sheaths mostly shorter than adjacent culm internode; glabrous on surface. Leaf-sheath oral hairs bearded; 3-4 mm long. Ligule a fringe of hairs. Collar glabrous. Leaf-blades flat, or convolute; 7-15.5 cm long; 2 mm wide. Leaf-blade surface scabrous; rough adaxially; glabrous; hairless except near base. Leaf-blade margins scabrous. Leaf-blade apex attenuate; filiform.
    Inflorescences
    Inflorescence a panicle. Panicle contracted; linear; bearing few spikelets. Panicle branches scaberulous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform; scabrous.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 15-17 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 1 mm long; pubescent; acute.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 15-17 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 1 mm long; pubescent; acute.
    Glume
    Glumes similar; exceeding apex of florets; thinner than fertile lemma. Lower glume linear; 13-17 mm long; 0.9-1 length of upper glume; membranous; 3 -veined. Lower glume primary vein ciliolate. Lower glume lateral veins absent, or obscure. Lower glume apex awned; 1 -awned. Lower glume awn 1-1.5 mm long. Upper glume linear; 15-17 mm long; 1.5 length of adjacent fertile lemma; membranous; 1 -veined. Upper glume primary vein smooth. Upper glume lateral veins absent. Upper glume apex dentate; 2 -fid; mucronate, or awned; 1 -awned. Upper glume awn 0.5-1 mm long.
    Florets
    Fertile lemma linear; subterete; 10-11 mm long; coriaceous; without keel; 3 -veined. Lemma surface scaberulous. Lemma margins convolute; covering most of palea. Lemma apex awned; 3 -awned. Principal lemma awn with 40-45 mm long limb. Lateral lemma awns 35-40 mm long; subequal to principal, or shorter than principal. Palea 1.75-2 mm long; 0.1-0.2 length of lemma; hyaline; 0 -veined.
    Flowers
    Lodicules 2; 1.75 mm long. Anthers 3.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    South America: southern South America.
    Reference
    Aristideae. Caro 1997.

    Distribution

    Native to:

    Argentina Northwest

    Aristida sayapensis Caro appears in other Kew resources:

    First published in Kurtziana 1: 159 (1961)

    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