1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida laevis (Nees) Kunth

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

    [GB]
    Habit
    Perennial. Culms 40-130 cm long. Lateral branches lacking. Leaf-sheath oral hairs lacking, or scanty (deciduous). Ligule a ciliolate membrane; 0.2 mm long. Collar pubescent (continuous). Leaf-blades straight; flat, or conduplicate (less frequent); (8-)15-60 cm long; 1.7-3.5 mm wide. Leaf-blade surface scabrous; rough adaxially; glabrous. Leaf-blade apex acute; antrorsely scabrous.
    Inflorescences
    Inflorescence a panicle. Panicle contracted (linear); 10-30 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; 0.7-1 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; 0.7-1 mm long; pilose; acute (subacute).
    Glume
    Glumes persistent; dissimilar (lower shorter than upper). Lower glume lanceolate; (8-)10-15 mm long; 1 -veined. Lower glume primary vein scaberulous. Lower glume surface asperulous; rough generally. Lower glume apex setaceously attenuate. Upper glume lanceolate; (10-)15-20 mm long; 1 -veined. Upper glume surface smooth. Upper glume apex entire; setaceously attenuate; awned.
    Florets
    Fertile lemma subterete; 10-14 mm long; without keel; rounded throughout; 3 -veined. Lemma surface smooth, or scaberulous; rough above. Lemma margins convolute. Lemma apex awned; 3 -awned. Principal lemma awn straight; ascending; simple at base; with (23-)25-40(-46) mm long limb; without a column. Lateral lemma awns ascending; (23-)25-40(-46) mm long; subequal to principal.
    Distribution
    South America: Brazil and southern South America.
    Reference
    Aristideae. LO-W 1993.

    Images

    Distribution

    Native to:

    Argentina Northeast, Argentina Northwest, Brazil South, Brazil Southeast, Brazil West-Central, Paraguay, Uruguay

    Aristida laevis (Nees) Kunth appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 1993 Clayton, W.D. [4413], Brazil K001054337
    Jan 1, 1993 Clayton, W.D. [4372], Brazil K001054342
    Jan 1, 1993 Rambo, B. [26316], Brazil K001054339
    Longhi-Wagner, H.M. [3662], Brazil K001054340
    Sellow [s.n.], Brazil K000308671
    Sellow [s.n.], Uruguay K000308690
    Ferreira, A.R. [52] K001054343
    Dombrowski, L.T.D. [6744], Brazil K001054338
    Dombrowski, L.T.D. [6714], Brazil K001054341

    First published in Enum. Pl. 1: 192 (1833)

    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

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/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

    Neotropikey
    Milliken, W., Klitgard, B. and Baracat, A. (2009 onwards), Neotropikey - Interactive key and information resources for flowering plants of the Neotropics.
    http://creativecommons.org/licenses/by/3.0