1. Family: Poaceae Barnhart
    1. Genus: Panicum L.
      1. Panicum lacustre Hitchc. & Ekman

        This species is accepted, and its native range is Florida, Cuba.

    [GB]
    Habit
    Perennial. Culms erect; 100-150 cm long; spongy; rooting from lower nodes. Culm-internodes distally glabrous. Leaf-sheaths glabrous on surface. Ligule a ciliate membrane; 1-2 mm long. Leaf-blades flat, or conduplicate; 15-30 cm long; 2 mm wide. Leaf-blade surface scaberulous; pilose; sparsely hairy; hairy adaxially.
    Inflorescences
    Inflorescence a panicle. Panicle open; ovate; 20-30 cm long; contracted about secondary branches. Primary panicle branches ascending; whorled at lower nodes. Panicle branches scabrous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 1-2 mm long.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate, or oblong; dorsally compressed; acute; 2 mm long; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate, or oblong; dorsally compressed; acute; 2 mm long; falling entire.
    Glume
    Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 0.25-0.33 length of spikelet; membranous; without keels. Lower glume apex obtuse. Upper glume elliptic; 1 length of spikelet; membranous; without keels; 5 -veined. Upper glume apex acute.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret similar to upper glume; elliptic; 1 length of spikelet; membranous; 7 -veined; acute. Fertile lemma elliptic; dorsally compressed; 1.8 mm long; indurate; without keel. Lemma margins involute. Lemma apex acute. Palea involute; indurate.
    Flowers
    Anthers 3.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    North America: southeast USA. South America: Caribbean.
    Reference
    Paniceae. Man Gr WI 1994.

    Distribution

    Native to:

    Cuba, Florida

    Panicum lacustre Hitchc. & Ekman appears in other Kew resources:

    First published in Misc. Publ. U.S.D.A. 243: 253 (1936)

    Accepted by

    • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
    • 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
    • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
    • 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