1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida purpurea Nutt.

        This species is accepted, and its native range is W. Central & S. U.S.A. to Mexico, Cuba to Hispaniola.

    [GB]
    Habit
    Perennial; caespitose. Culms slender; 25-70 cm long. Leaves mostly basal, or basal and cauline. Leaf-sheaths glabrous on surface, or puberulous. Leaf-sheath oral hairs pubescent, or ciliate. Ligule a fringe of hairs; 0.3-0.6 mm long. Leaf-blades involute; 3-18 cm long; 0.7-2 mm wide.
    Inflorescences
    Inflorescence a panicle. Panicle open; linear; nodding; 10-25 cm long. Primary panicle branches appressed, or spreading. Panicle branches capillary; flexuous. Spikelets solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 11-15 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.5 mm long; pubescent; pungent.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 11-15 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.5 mm long; pubescent; pungent.
    Glume
    Glumes dissimilar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 6-8 mm long; 0.5 length of upper glume; membranous; 1 -veined. Lower glume lateral veins absent. Lower glume apex acuminate. Upper glume lanceolate; 11-15 mm long; 1.1-1.3 length of adjacent fertile lemma; membranous; 1 -veined. Upper glume lateral veins absent. Upper glume apex acuminate.
    Florets
    Fertile lemma linear; subterete; 10-12 mm long; coriaceous; without keel; 3 -veined. Lemma surface scaberulous; rough above and in lines. Lemma margins convolute; covering most of palea. Lemma apex awned; 3 -awned. Principal lemma awn 3-branched; spreading; with 35-45 mm long limb; without a column. Lateral lemma awns 35-45 mm long; subequal to principal.
    Flowers
    Anthers 3.
    Distribution
    North America: western Canada, northwest USA, north-central USA, southwest USA, south-central USA, southeast USA, and Mexico. South America: Caribbean.
    Reference
    Aristideae. Gr Tex 1993.

    Images

    Distribution

    Native to:

    Arizona, Arkansas, California, Colorado, Cuba, Dominican Republic, Haiti, Kansas, Louisiana, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Nevada, New Mexico, Oklahoma, Texas, Utah

    Introduced into:

    Florida

    Aristida purpurea Nutt. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Fendler [973], Mexico K000308624
    Lindheimer, F.J. [562] K000906111
    Lindheimer, F.J. [562] K000906112
    Drummond, T. [293], Texas K000906108
    Berlandier [2551] K000906110
    Berlandier [1777] K000906109
    Nuttall, T. [s.n.], Arkansas K000906107 Unknown type material
    Baker, C.F. [973], Colorado Aristida roemeriana K000906105
    Nealley, G.C. [s.n.], Texas Aristida roemeriana K000906106

    First published in Trans. Amer. Philos. Soc., n.s., 5: 145 (1835)

    Accepted by

    • Franck, A.R., Anderson, L.C., Burkhalter, J.R. & Dickman, S. (2016). Additions to the flora of Florida, U.S.A. (2010-2015) Journal of the Botanical Research Institute of Texas 10: 175-190.
    • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
    • Packer, J.G. & Gould, J. (2007). Vascular Plants of alberta 1: 1-281. University of Calgary Press.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006). Catálogo de las Gramíneas de México: 1-671. CONABIO, México city.
    • 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
    • Franck, A.R., Anderson, L.C., Burkhalter, J.R. & Dickman, S. (2016). Additions to the flora of Florida, U.S.A. (2010-2015) Journal of the Botanical Research Institute of Texas 10: 175-190.
    • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
    • Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006). Catálogo de las Gramíneas de México: 1-671. CONABIO, México city.
    • 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