1. Family: Poaceae Barnhart
    1. Genus: Panicum L.
      1. Panicum verrucosum Muhl.

        This species is accepted, and its native range is Central & E. U.S.A.

    [GB]
    Habit
    Annual. Culms erect, or geniculately ascending, or decumbent; 50-120 cm long. Lateral branches sparse, or ample. Leaf-sheaths glabrous on surface; outer margin hairy. Ligule a fringe of hairs; 0.3 mm long. Leaf-blades 5-20 cm long; 4-10 mm wide; flaccid; light green. Leaf-blade surface glabrous.
    Inflorescences
    Inflorescence a panicle. Panicle open; ovate; effuse; 5-30 cm long; bearing few spikelets; with spikelets clustered towards branch tips. Primary panicle branches spreading; 1-3 cm long. Panicle branches stiff. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic, or obovate; dorsally compressed; 1.7-2.1 mm long; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic, or obovate; dorsally compressed; 1.7-2.1 mm long; falling entire.
    Glume
    Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 0.2-0.25 length of spikelet; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 1 length of spikelet; membranous; without keels; 5 -veined. Upper glume surface tuberculate. Upper glume apex acute.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret similar to upper glume; ovate; 1 length of spikelet; membranous; 5 -veined; tuberculate; acute. Fertile lemma ovate; dorsally compressed; 1.5-2 mm long; indurate; without keel. Lemma surface reticulate. Lemma margins involute. Palea involute; indurate.
    Flowers
    Anthers 3.
    Distribution
    North America: northeast USA, south-central USA, and southeast USA.
    Reference
    Paniceae. Gr Texas 1994.

    Images

    Distribution

    Native to:

    Alabama, Arkansas, Connecticut, Delaware, District of Columbia, Florida, Georgia, Illinois, Indiana, Kentucky, Louisiana, Maryland, Masachusettes, Michigan, Mississippi, Missouri, New Jersey, New York, North Carolina, Ohio, Oklahoma, Pennsylvania, Rhode I., South Carolina, Tennessee, Texas, Virginia, West Virginia

    Panicum verrucosum Muhl. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Elliot, S. [s.n.], USA K000674423
    Hooker, J. D. [s.n.], USA K000674422

    First published in Descr. Gram.: 113 (1817)

    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

    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 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