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

        This species is accepted, and its native range is Uruguay.

    [GB]
    Habit
    Perennial; caespitose; clumped densely. Culms erect; 20-30 cm long. Ligule a fringe of hairs. Leaf-blades involute; 4-7 cm long; 1 mm wide. Leaf-blade surface scaberulous; rough adaxially. Leaf-blade margins scaberulous. Leaf-blade apex attenuate; filiform.
    Inflorescences
    Inflorescence a panicle. Panicle contracted; linear, or oblong; 6-10 cm long. Panicle branches scabrous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 0.5 length of fertile spikelet; scabrous; tip widened.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 13-14 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 1 mm long; pubescent; obtuse.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 13-14 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 1 mm long; pubescent; obtuse.
    Glume
    Glumes similar; exceeding apex of florets; thinner than fertile lemma. Lower glume linear; 13-14 mm long; 1.1 length of upper glume; membranous; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume surface scabrous; rough above. Lower glume apex acuminate. Upper glume linear; 12 mm long; membranous; 1 -veined. Upper glume primary vein smooth. Upper glume lateral veins absent. Upper glume apex acuminate.
    Florets
    Fertile lemma linear; subterete; 8-9 mm long; coriaceous; without keel; 3 -veined. Lemma surface scabrous. Lemma margins convolute; covering most of palea. Lemma apex awned; 3 -awned. Principal lemma awn 3-branched; with 35-40 mm long limb; with twisted column. Column of lemma awn 4 mm long. Lateral lemma awns 35-40 mm long; subequal to principal.
    Flowers
    Anthers 3.
    Fruits
    Caryopsis with adherent pericarp; fusiform; without sulcus. Hilum linear.
    Distribution
    South America: southern South America.
    Reference
    Aristideae. Henrard 1995.

    Distribution

    Native to:

    Uruguay

    Aristida hackelii Arechav. appears in other Kew resources:

    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
    • Lezama, F. & Bonifacino, J.M. (2012). Sinopsis de Aristida (Poaceae) para Uruguay Boletín de la Sociedad Argentina de Botánica 47: 135-143.

    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 2019. 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 2019. 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