1. Family: Poaceae Barnhart
    1. Genus: Panicum L.
      1. Panicum havardii Vasey

        This species is accepted, and its native range is Oklahoma to S. Central U.S.A., SE. Mexico.

    [GB]
    Habit
    Perennial; culms solitary. Rhizomes elongated; scaly. Culms decumbent; 70-160 cm long. Culm-internodes glaucous; distally glabrous. Leaf-sheaths without keel; glabrous on surface. Ligule a ciliate membrane; 2-4 mm long. Leaf-blades flat, or conduplicate; 5-10 mm wide; glaucous. Leaf-blade apex attenuate; filiform.
    Inflorescences
    Inflorescence a panicle. Panicle open; ovate; 20-40 cm long. Primary panicle branches spreading. Panicle branches stiff. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; acuminate; 6-8 mm long; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; acuminate; 6-8 mm long; falling entire.
    Glume
    Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 0.4-0.66 length of spikelet; membranous; without keels; 5 -veined. Lower glume apex acuminate. Upper glume ovate; 1 length of spikelet; membranous; without keels; 7 -veined. Upper glume apex attenuate.
    Florets
    Basal sterile florets male; with palea. Lemma of lower sterile floret similar to upper glume; ovate; 1 length of spikelet; membranous; 5 -veined; attenuate. Fertile lemma elliptic; dorsally compressed; 4.5-6 mm long; indurate; shiny; without keel. Lemma margins involute. Lemma apex acute. Palea involute; indurate.
    Distribution
    North America: south-central USA and Mexico.
    Reference
    Paniceae. Gr Texas 1994.

    Distribution

    Native to:

    Mexico Southeast, New Mexico, Oklahoma, Texas

    Panicum havardii Vasey appears in other Kew resources:

    First published in Bull. Torrey Bot. Club 19: 95 (1887)

    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.
    • Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006). Catálogo de las Gramíneas de México: 1-671. CONABIO, México city.
    • 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
    • Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006). Catálogo de las Gramíneas de México: 1-671. CONABIO, México city.
    • 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 2018. 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 2018. 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