1. Family: Poaceae Barnhart
    1. Genus: Sporobolus R.Br.
      1. Sporobolus interruptus Vasey

        This species is accepted, and its native range is Arizona.

    [GB]
    Habit
    Perennial; caespitose; clumped densely. Culms erect; 30-60 cm long. Culm-internodes smooth. Lateral branches lacking. Leaves mostly basal. Leaf-sheaths glabrous on surface, or pilose. Leaf-sheath oral hairs ciliate. Ligule a fringe of hairs. Leaf-blades erect; flat, or conduplicate; 10-15 cm long; 1-2 mm wide. Leaf-blade surface glabrous, or pilose; sparsely hairy.
    Inflorescences
    Inflorescence a panicle. Panicle open; elliptic; 10-20 cm long. Primary panicle branches ascending, or spreading; distant; 1 -nate. Panicle axis smooth. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 6 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 6 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes deciduous; reaching apex of florets. Lower glume lanceolate; 2-3 mm long; 0.5 length of upper glume; membranous; without keels. Lower glume apex acute. Upper glume elliptic; 1 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.
    Florets
    Fertile lemma ovate; 6 mm long; membranous; without keel; 1 -veined. Lemma apex acute. Palea 1 length of lemma; 2 -veined. Palea keels approximate.
    Fruits
    Caryopsis with free soft pericarp.
    Distribution
    North America: southwest USA.
    Reference
    Eragrostideae. N Amer Fl 1994.

    Distribution

    Native to:

    Arizona

    Sporobolus interruptus Vasey appears in other Kew resources:

    First published in Bull. Torrey Bot. Club 15: 8 (1888)

    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.
    • 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
    • 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 2019. 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 2019. 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