1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida riograndensis B.M.A.Severo & I.I.Boldrini

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

    [GB]
    Habit
    Perennial. Culms 53-115 cm long. Lateral branches lacking. Leaf-sheath oral hairs bearded. Ligule a fringe of hairs; 0.1-0.2 mm long. Collar pubescent (descontinuous on the mid vein). Leaf-blades straight, or curved (slightly); conduplicate; (4-)11-84 cm long; 1-2 mm wide. Leaf-blade surface scabrous; rough adaxially; glabrous. Leaf-blade apex acute; antrorsely scabrous.
    Inflorescences
    Inflorescence a panicle. Panicle contracted (subcontracted, not linear); 16-34 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; 0.7-1.2 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; 0.7-1.2 mm long; pilose; acute (subacute).
    Glume
    Glumes persistent; dissimilar (lower shorter than upper). Lower glume lanceolate; 15-23 mm long; 1 -veined. Lower glume primary vein scabrous. Lower glume surface asperulous; rough generally. Lower glume apex setaceously attenuate. Upper glume lanceolate; 23-35 mm long; 1 -veined. Upper glume primary vein scaberulous. Upper glume surface smooth. Upper glume apex entire; setaceously attenuate; awned.
    Florets
    Fertile lemma subterete; 13-22(-25) mm long; without keel; rounded throughout; 3 -veined. Lemma midvein scabrous. Lemma surface smooth, or scaberulous; rough above. Lemma margins convolute. Lemma apex awned; 3 -awned. Principal lemma awn straight; ascending; simple at base; with 50-100 mm long limb; without a column. Lateral lemma awns ascending; 50-100 mm long; subequal to principal.
    Distribution
    South America: Brazil.
    Reference
    Aristideae. LO-W 1993.

    Images

    Distribution

    Native to:

    Brazil South

    Aristida riograndensis B.M.A.Severo & I.I.Boldrini appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Chamisso [s.n.], Brazil K001101389

    First published in Bradea 3: 239 (1982)

    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
    • Forzza, R.C. & al. (2013). Lista de Espécies da Flora do Brasil http://floradobrasil.jbrj.gov.br/2010/.

    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