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  1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida gyrans Chapm.

        This species is accepted, and its native range is SE. U.S.A., Cuba to Hispaniola.

    [GB]
    Habit
    Perennial; caespitose. Culms erect; slender; 40-70 cm long. Culm-internodes distally glabrous. Leaf-sheaths glabrous on surface. Ligule a fringe of hairs. Leaf-blades involute; 10-15 cm long; 1 mm wide. Leaf-blade surface scabrous; rough adaxially.
    Inflorescences
    Inflorescence a panicle. Panicle open; linear; 15-30 cm long. Primary panicle branches appressed; bearing 1-3(-6) fertile spikelets on each lower branch. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 10-11 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 1.5 mm long; pubescent; pungent.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 10-11 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 1.5 mm long; pubescent; pungent.
    Glume
    Glumes similar; exceeding apex of florets; thinner than fertile lemma. Lower glume linear; 7-8 mm long; 0.7-0.8 length of upper glume; membranous; 2 -veined. Lower glume primary vein smooth. Lower glume apex setaceously attenuate. Upper glume linear; 10-11 mm long; membranous; 1 -veined. Upper glume primary vein smooth. Upper glume lateral veins absent. Upper glume apex setaceously attenuate.
    Florets
    Fertile lemma linear; subterete; 6 mm long; coriaceous; 3 -veined. Lemma margins convolute; covering most of palea. Lemma apex scabrous; with a short cylindrical neck; with this appendage 0.5 mm long; awned; 3 -awned. Principal lemma awn spreading; with 10-15 mm long limb. Lateral lemma awns gyrate; 10-15 mm long; subequal to principal.
    Flowers
    Anthers 3.
    Distribution
    North America: southeast USA.
    Reference
    Aristideae. N Amer Fl 1994.

    Images

    Distribution

    Native to:

    Cuba, Dominican Republic, Florida, Georgia, Haiti

    Other Data

    Aristida gyrans Chapm. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Chapman [s.n.] K000906087

    Bibliography

    First published in Bot. Gaz. 3: 18 (1878)

    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

    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