1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida spiciformis Elliott

        This species is accepted, and its native range is SE. U.S.A. to Texas, Caribbean.

    [GB]
    Habit
    Perennial; caespitose. Culms erect; 50-100 cm long. Leaf-sheath oral hairs lacking, or ciliate. Ligule a fringe of hairs. Leaf-blades erect; flat, or involute; 15-30 cm long; 1-3 mm wide. Leaf-blade surface scabrous; rough adaxially.
    Inflorescences
    Inflorescence a panicle. Panicle contracted, or spiciform; linear, or oblong; 10-15 cm long. Primary panicle branches appressed. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 8-10 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 2 mm long; pubescent; pungent.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 8-10 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 2 mm long; pubescent; pungent.
    Glume
    Glumes similar; exceeding apex of florets; thinner than fertile lemma. Lower glume linear; 4 mm long; 0.5 length of upper glume; membranous; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acuminate; awned; 1 -awned. Lower glume awn 10-12 mm long. Upper glume linear; 8-10 mm long; 1.6 length of adjacent fertile lemma; membranous; 1 -veined. Upper glume lateral veins absent. Upper glume apex acuminate; awned; 1 -awned. Upper glume awn 10-12 mm long.
    Florets
    Fertile lemma linear; subterete; 5-6 mm long; coriaceous; 3 -veined. Lemma margins convolute; covering most of palea. Lemma apex awned; 3 -awned. Principal lemma awn 3-branched; spreading; with 20-30 mm long limb; with twisted column. Column of lemma awn 10-30 mm long. Lateral lemma awns spreading as much as principal; 20-30 mm long; subequal to principal.
    Flowers
    Anthers 3.
    Distribution
    North America: southeast USA. South America: Caribbean.
    Reference
    Aristideae. N Amer Fl 1994.

    Distribution

    Native to:

    Alabama, Cuba, Florida, Georgia, Mississippi, North Carolina, Puerto Rico, South Carolina, Texas

    Aristida spiciformis Elliott appears in other Kew resources:

    First published in Sketch Bot. S. Carolina 1: 141 (1816)

    Accepted by

    • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.

    Literature

    Kew Backbone Distributions
    • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
    • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.

    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 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