1. Family: Poaceae Barnhart
    1. Genus: Sporobolus R.Br.
      1. Sporobolus airoides (Torr.) Torr.

        This species is accepted, and its native range is W. Canada to U.S.A., Mexico.

    [GB]
    Habit
    Perennial; caespitose. Culms erect; 50-150 cm long; 1-2 mm diam. Leaf-sheaths without keel; glabrous on surface. Leaf-sheath oral hairs scanty; 2-4 mm long. Ligule a fringe of hairs. Leaf-blades flat, or involute; 15-45 cm long; 2-6 mm wide.
    Inflorescences
    Inflorescence a panicle. Panicle open; pyramidal; effuse; 20-45 cm long; 15-25 cm wide. Spikelets spreading; solitary. Fertile spikelets pedicelled. Pedicels 0.5-2 mm long.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 1.3-2.5(-2.8) mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 1.3-2.5(-2.8) mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes deciduous; shorter than spikelet. Lower glume ovate; 0.4-1.8 mm long; 0.5-0.75 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 1-1.2 mm long; 0.75 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.
    Florets
    Fertile lemma ovate; 1.3-2.8 mm long; membranous; without keel; 1 -veined. Lemma apex acute. Palea 2 -veined. Palea keels approximate.
    Flowers
    Anthers 3; 1.5-1.7 mm long; yellow.
    Fruits
    Caryopsis with free soft pericarp; 1 mm long.
    Distribution
    Asia-temperate: Arabia. North America: northwest USA, north-central USA, southwest USA, south-central USA, and Mexico.
    Reference
    Eragrostideae. Gr Tex 1993.

    Distribution

    Native to:

    Arizona, Arkansas, British Columbia, California, Colorado, Idaho, Kansas, Mexico Northeast, Mexico Southwest, Missouri, Montana, Nebraska, Nevada, New Mexico, New York, North Dakota, Oklahoma, Oregon, South Carolina, South Dakota, Texas, Utah, Washington, Wyoming

    Introduced into:

    India, Saudi Arabia

    Sporobolus airoides (Torr.) Torr. appears in other Kew resources:

    First published in R.B.Marcy, Explor. Red River Louisiana: 300 (1853)

    Accepted by

    • Garcia-Mendoza, A.J. & Meave, J.A. (eds.) (2012). Diversidad florística de Oaxaca: de musgos a angiospermas (colecciones y listas de especies), ed. 2: 1-351. Instituto de Biología, Universidad Nacional Autónoma de México.
    • Cope, T.A., Knees, S.G. & Miller, A.G. (2007). Flora of the Arabian peninsula and Socotra 5(1): 1-387. Edinburgh University 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
    • Garcia-Mendoza, A.J. & Meave, J.A. (eds.) (2012). Diversidad florística de Oaxaca: de musgos a angiospermas (colecciones y listas de especies), ed. 2: 1-351. Instituto de Biología, Universidad Nacional Autónoma de México.
    • Cope, T.A., Knees, S.G. & Miller, A.G. (2007). Flora of the Arabian peninsula and Socotra 5(1): 1-387. Edinburgh University Press.
    • 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.
    • Karthikeyan, S., Jain, S.K., Nayar, M.P. & Sanjappa, M. (1989). Florae Indicae Enumeratio: Monocotyledonae: 1-435. Botanical Survey of India, Calcutta.

    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