1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida teretifolia Arechav.

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

    [GB]
    Habit
    Perennial; caespitose; clumped densely. Rhizomes short. Culms erect, or geniculately ascending; 20-40 cm long; 1 -noded. Culm-internodes smooth. Lateral branches lacking. Leaf-sheaths smooth. Leaf-sheath oral hairs bearded. Ligule a fringe of hairs. Collar glabrous. Leaf-blades straight, or curved; aciculate; convolute; 5-12 cm long; 1-1.5 mm wide; coriaceous; stiff. Leaf-blade venation with 9 secondary veins. Leaf-blade surface scaberulous; rough adaxially. Leaf-blade apex obtuse.
    Inflorescences
    Inflorescence a panicle. Panicle contracted; linear; interrupted; 10-15 cm long. Primary panicle branches appressed, or ascending; 2 -nate; 3-8 cm long; bearing 5-10 fertile spikelets on each lower branch. Panicle branches scabrous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels scabrous.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 16-17 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; 16-17 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 1 mm long; pubescent; acute.
    Glume
    Glumes similar; shorter than spikelet; thinner than fertile lemma. Lower glume lanceolate; 10-12 mm long; 0.66 length of upper glume; membranous; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume apex acute; mucronate. Upper glume lanceolate; 16-17 mm long; membranous; 1 -veined. Upper glume primary vein smooth. Upper glume lateral veins absent. Upper glume apex acute; awned; 1 -awned. Upper glume awn 1.5-2.5 mm long.
    Florets
    Fertile lemma linear; subterete; 10-12 mm long; coriaceous; without keel; 3 -veined. Lemma midvein scaberulous. Lemma surface smooth, or granulose. Lemma margins convolute; covering most of palea. Lemma apex awned; 3 -awned. Principal lemma awn with 30-35 mm long limb. Lateral lemma awns 30-35 mm long; subequal to principal.
    Flowers
    Anthers 3.
    Fruits
    Caryopsis with adherent pericarp; fusiform; without sulcus. Hilum linear.
    Distribution
    South America: Brazil and southern South America.
    Reference
    Aristideae. Henrard 1995.

    Images

    Distribution

    Native to:

    Brazil South, Paraguay, Uruguay

    Aristida teretifolia Arechav. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Rambo, B. [43662], Brazil K001101349
    Klein, R.M. [11989], Brazil K001101350

    First published in Anales Mus. Nac. Montevideo 4(1): 79 (1902)

    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