1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida uruguayensis Henrard

        This species is accepted, and its native range is S. Brazil to N. Argentina.

    [GB]
    Habit
    Perennial. Culms 27-50(-73) cm long. Lateral branches lacking. Leaf-sheath oral hairs lacking. Ligule a fringe of hairs; 0.2 mm long. Collar glabrous. Leaf-blades curved; conduplicate; 15-35 cm long, or 0 cm long; 1.8 mm wide, or 0.2-3.2 mm wide. Leaf-blade surface scabrous; rough adaxially; glabrous. Leaf-blade apex acute; antrorsely scabrous.
    Inflorescences
    Inflorescence a panicle. Panicle open; 15-24(-28) cm long.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets subterete; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; straight; 0.7-0.8 mm long; pilose; acute (subacute).
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets subterete; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; straight; 0.7-0.8 mm long; pilose; acute (subacute).
    Glume
    Glumes persistent; dissimilar (lower shorter than upper). Lower glume lanceolate; (13-)17-21 mm long; 1(-3) -veined (lateral veins free). Lower glume primary vein scabrous. Lower glume surface asperulous; rough generally. Lower glume apex setaceously attenuate. Upper glume lanceolate; 27-37(-40) mm long; 1 -veined. Upper glume surface smooth. Upper glume apex entire; acuminate.
    Florets
    Fertile lemma laterally compressed; 13-18 mm long; keeled; distinctly keeled; keeled above; 3 -veined. Lemma midvein without distinctive roughness, or scabrous. Lemma surface smooth; without grooves. Lemma margins convolute. Lemma apex awned; 3 -awned. Principal lemma awn straight; ascending; simple at base; with 75-130 mm long limb; without a column. Lateral lemma awns ascending; 75-130 mm long; subequal to principal.
    Distribution
    South America: Brazil and southern South America.
    Reference
    Aristideae. LO-W 1993.
    Diagnostic
    Culms grouped in fascicles. Lemma apex with an hyaline appendage 1-1.5mm.

    Distribution

    Native to:

    Argentina Northeast, Argentina Northwest, Brazil South, Uruguay

    Aristida uruguayensis Henrard appears in other Kew resources:

    First published in Meded. Rijks-Herb. 54B: 647 (1928)

    Accepted by

    • Lezama, F. & Bonifacino, J.M. (2012). Sinopsis de Aristida (Poaceae) para Uruguay Boletín de la Sociedad Argentina de Botánica 47: 135-143.
    • 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
    • Forzza, R.C. & al. (2013). Lista de Espécies da Flora do Brasil http://floradobrasil.jbrj.gov.br/2010/.
    • 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