1. Family: Poaceae Barnhart
    1. Genus: Sporobolus R.Br.
      1. Sporobolus compositus (Poir.) Merr.

        This species is accepted, and its native range is N. America.

    [GB]
    Habit
    Perennial; culms solitary, or caespitose. Rhizomes absent, or elongated; scaly. Culms erect; 60-170 cm long; 1-5 mm diam. Leaf-sheaths glabrous on surface. Ligule a fringe of hairs. Leaf-blades flat, or conduplicate; 10-30 cm long; 1-4 mm wide. Leaf-blade surface glabrous, or pubescent.
    Inflorescences
    Inflorescence a panicle; terminal and axillary; subtended by an inflated leaf-sheath; embraced at base by subtending leaf, or enclosed. Axillary inflorescences enclosed. Panicle spiciform; linear; dense, or loose; 5-30 cm long; 0.4-1 cm wide. Primary panicle branches 8-35 in number. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 4-6 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 4-6 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes deciduous; shorter than spikelet; shiny. Lower glume lanceolate; 0.5-1 length of upper glume; membranous; mid-green, or purple; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 1 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.
    Florets
    Fertile lemma ovate; 1.4-2 mm long; membranous; without keel; 1 -veined. Lemma apex acute. Palea 1 length of lemma; 2 -veined. Palea keels approximate.
    Flowers
    Anthers eventually exserted, or retained within floret (when panicle axillary).
    Fruits
    Caryopsis with free soft pericarp.
    Distribution
    North America: eastern Canada, northwest USA, north-central USA, northeast USA, southwest USA, south-central USA, and southeast USA.
    Reference
    Eragrostideae. Gr Tex 1993.

    Images

    Distribution

    Native to:

    Alabama, Arizona, Arkansas, British Columbia, Colorado, Connecticut, Delaware, District of Columbia, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Manitoba, Maryland, Masachusettes, Mexico Northeast, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, New Brunswick, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Ontario, Oregon, Pennsylvania, Québec, Rhode I., South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming

    Sporobolus compositus (Poir.) Merr. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Drummond, T. [s.n.], USA Sporobolus asper var. hookeri K000907254
    s.coll. [317], USA Sporobolus asper var. hookeri K000907253
    s.coll. [316], USA Sporobolus asper var. hookeri K000907255

    First published in Circ. Div. Agrostol. U.S.D.A. 32: 6 (1901)

    Accepted by

    • Ibrahim, K.M. & Peterson, P.M. (2014). Grasses of Washington, D.C. Smithsonian Contributions to Botany 99: 1-128.
    • 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.

    Not accepted by

    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew. [Cited as Sporobolus asper.]

    Literature

    Kew Backbone Distributions
    • Ibrahim, K.M. & Peterson, P.M. (2014). Grasses of Washington, D.C. Smithsonian Contributions to Botany 99: 1-128.
    • 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 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