1. Family: Poaceae Barnhart
    1. Genus: Sporobolus R.Br.
      1. Sporobolus junceus (P.Beauv.) Kunth

        This species is accepted, and its native range is SE. U.S.A. to Arizona, S. Mexico.

    [GB]
    Habit
    Perennial; caespitose. Culms erect; slender; 50-100 cm long. Lateral branches lacking. Leaf-sheaths glabrous on surface; outer margin glabrous, or hairy. Ligule a fringe of hairs; 0.2 mm long. Leaf-blades flat, or involute; 13-30 cm long; 1-2 mm wide. Leaf-blade surface glabrous, or hispid; sparsely hairy.
    Inflorescences
    Inflorescence a panicle. Panicle open; lanceolate; 10-25 cm long; 3-6 cm wide. Primary panicle branches spreading; whorled at most nodes; simple; 2-3.5 cm long. Spikelets appressed; solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 3-3.8 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 3-3.8 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes deciduous; exceeding apex of florets. Lower glume lanceolate; 1.2-3 mm long; 0.4-0.75 length of upper glume; membranous; light brown; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute, or acuminate. Upper glume ovate; 3-3.8 mm long; 1.1 length of adjacent fertile lemma; membranous; light brown; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute, or acuminate.
    Florets
    Fertile lemma ovate; 2.8-3.6 mm long; membranous; without keel; 1 -veined. Lemma apex acute. Palea 1 length of lemma; 2 -veined. Palea keels approximate.
    Flowers
    Anthers 1.5-2 mm long.
    Fruits
    Caryopsis with free soft pericarp; oblong; 1.5 mm long; light brown; rugose. Embryo 0.66-0.75 length of caryopsis.
    Distribution
    North America: north-central USA, northeast USA, south-central USA, and southeast USA.
    Reference
    Eragrostideae. Gr Tex 1993.

    Distribution

    Native to:

    Alabama, Arizona, Arkansas, Florida, Georgia, Louisiana, Mexico Gulf, Mexico Southeast, Mississippi, North Carolina, South Carolina, Tennessee, Texas, Virginia

    Introduced into:

    Bermuda, Leeward Is., Trinidad-Tobago

    Sporobolus junceus (P.Beauv.) Kunth appears in other Kew resources:

    First published in Révis. Gramin. 1: 68 (1829)

    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.
    • 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
    • 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

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2018. 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 2018. 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