1. Family: Poaceae Barnhart
    1. Genus: Sporobolus R.Br.
      1. Sporobolus michauxianus (Hitchc.) P.M.Peterson & Saarela

        This species is accepted, and its native range is Subarctic America to U.S.A.

    [GB]
    Habit
    Perennial; culms solitary. Rhizomes elongated; scaly. Culms erect; 100-250 cm long. Leaf-sheath oral hairs lacking, or ciliate. Ligule a fringe of hairs; 1-3 mm long. Leaf-blades flat, or involute; 5-10 mm wide. Leaf-blade surface glabrous. Leaf-blade margins scabrous. Leaf-blade apex acuminate.
    Inflorescences
    Inflorescence composed of racemes. Racemes few, or numerous; 5-50; borne along a central axis; appressed, or ascending; unilateral; 1.5-15 cm long; bearing 10-80 fertile spikelets on each. Central inflorescence axis 10-50 cm long. Rhachis angular; smooth on margins, or scabrous on margins; glabrous on margins; terminating in a spikelet. Spikelet packing broadside to rhachis; regular; 2 -rowed. Spikelets pectinate; solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 8-17 mm long; falling entire.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 8-17 mm long; falling entire.
    Glume
    Glumes dissimilar; exceeding apex of florets. Lower glume linear; 5-10 mm long; 0.33 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein ciliate. Lower glume lateral veins absent. Lower glume surface glabrous, or puberulous. Lower glume apex acute; awned. Upper glume lanceolate; 8-17 mm long; 1.5 length of adjacent fertile lemma; herbaceous; 1-keeled; 1-3 -veined. Upper glume primary vein pectinately ciliate. Upper glume surface glabrous, or puberulous. Upper glume apex acuminate; awned; 1 -awned. Upper glume awn 4-8 mm long.
    Florets
    Fertile lemma oblong; 6-12 mm long; herbaceous; keeled; 3 -veined. Lemma midvein pectinately ciliate; hairy above. Lemma margins ciliolate. Lemma apex dentate; 2 -fid. Palea 2 -veined.
    Flowers
    Lodicules absent. Anthers 3; 4-6 mm long.
    Distribution
    North America: Subarctic, western Canada, eastern Canada, northwest USA, north-central USA, northeast USA, southwest USA, south-central USA, and southeast USA.
    Reference
    Cynodonteae. Mobberley 1993.

    Distribution

    Native to:

    Alberta, Arkansas, British Columbia, Colorado, Connecticut, Delaware, District of Columbia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Manitoba, Maryland, Masachusettes, Michigan, Minnesota, Missouri, Montana, Nebraska, New Brunswick, New Hampshire, New Jersey, New Mexico, New York, Newfoundland, North Carolina, North Dakota, Northwest Territorie, Ohio, Oklahoma, Ontario, Oregon, Pennsylvania, Prince Edward I., Québec, Rhode I., Saskatchewan, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming

    Introduced into:

    Great Britain, Ireland, Italy

    Sporobolus michauxianus (Hitchc.) P.M.Peterson & Saarela appears in other Kew resources:

    First published in Taxon 63: 1237 (2014)

    Accepted by

    • Engelmaier, P. & Wilhalm, T. (2018). Alien grasses (Poaceae) in the flora of the Eastern Alps Neilreichia 9: 177-245.

    Literature

    Kew Backbone Distributions
    • Engelmaier, P. & Wilhalm, T. (2018). Alien grasses (Poaceae) in the flora of the Eastern Alps Neilreichia 9: 177-245.
    • Saarela, J.M. (2012). Taxonomic synopsis of invasive and native Spartina (Poaceae, Chloridoideae) in the Pacific Northwest (British Columbia, Washington, Oregon), including the first report of Spartina ×townsendii for British Columbia, Canada PhytoKeys 10: 25-82.
    • 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 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