1. Family: Poaceae Barnhart
    1. Genus: Panicum L.
      1. Panicum boscii Poir.

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

    [GB]
    Habit
    Perennial. Culms erect; 40-70 cm long. Culm-internodes distally glabrous, or pubescent. Culm-nodes bearded. Lateral branches ample; arising from mid culm. Leaves heterophyllous with a basal winter rosette. Leaf-sheaths glabrous on surface. Ligule absent. Leaf-blade base cordate. Leaf-blades spreading; lanceolate; 7-12 cm long; 15-30 mm wide. Leaf-blade surface glabrous. Leaf-blade margins tuberculate-ciliate; hairy at base.
    Inflorescences
    Inflorescence a panicle. Panicle open; ovate; 6-12 cm long. Primary panicle branches ascending. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 4-4.5 mm long; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 4-4.5 mm long; falling entire.
    Glume
    Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 0.33-0.5 length of spikelet; membranous; without keels; 3 -veined. Lower glume surface pilose. Lower glume apex acute. Upper glume ovate; 1 length of spikelet; membranous; without keels; 7 -veined. Upper glume surface pilose; with tubercle-based hairs. 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; 7 -veined; pilose; with tubercle-based hairs; acute. Fertile lemma elliptic; dorsally compressed; 4-4.5 mm long; indurate; without keel. Lemma margins involute. Palea involute; indurate.
    Distribution
    North America: north-central USA, northeast USA, south-central USA, and southeast USA.
    Reference
    Paniceae. Man US Gr 1997.

    Distribution

    Native to:

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

    Panicum boscii Poir. appears in other Kew resources:

    First published in J.B.A.M.de Lamarck, Encycl., Suppl. 4: 282 (1816)

    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.

    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