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

        This species is accepted, and its native range is Argentina (Misiones).

    [GB]
    Habit
    Perennial; caespitose; clumped densely. Basal innovations intravaginal. Culms erect; robust; 70-80 cm long; 1.5 mm diam. Culm-internodes smooth. Leaf-sheaths 20 cm long; smooth, or scaberulous. Leaf-sheath oral hairs pubescent and ciliate. Ligule a fringe of hairs. Leaf-blades filiform; conduplicate, or involute; 10-20 cm long; 0.75 mm wide. Leaf-blade surface scabrous; rough on both sides. Leaf-blade apex attenuate.
    Inflorescences
    Inflorescence a panicle. Panicle open; elliptic; 15-30 cm long; contracted about primary branches. Primary panicle branches appressed, or ascending; 2 -nate; 4-8 cm long. Panicle axis scabrous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 5 mm long.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 18-23 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.5 mm long; pubescent; obtuse.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 18-23 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.5 mm long; pubescent; obtuse.
    Glume
    Glumes similar; exceeding apex of florets; thinner than fertile lemma. Lower glume linear; 10.5-13.5 mm long; 0.66 length of upper glume; membranous; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acute; awned; 1 -awned. Lower glume awn 2 mm long. Upper glume linear; 18-23 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 2 mm long.
    Florets
    Fertile lemma linear; subterete; 11-13 mm long; coriaceous; purple; without keel; 3 -veined. Lemma margins convolute; covering most of palea. Lemma apex with a short cylindrical neck; awned; 3 -awned. Principal lemma awn 3-branched; with 40-70 mm long limb. Lateral lemma awns ascending, or gyrate; 40-70 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.

    Images

    Distribution

    Native to:

    Argentina Northeast

    Aristida valida Henrard appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Parodi, L.R. [6902], Argentina K000308689 Unknown type material

    First published in Meded. Rijks-Herb. 54B: 655 (1928)

    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
    • 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