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

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

    [GB]
    Habit
    Perennial. Butt sheaths persistent and investing base of culm; with curly dead sheaths. Culms erect, or geniculately ascending; 20-80 cm long. Culm-internodes glaucous. Culm-nodes glabrous, or pubescent. Leaves mostly basal. Leaf-sheaths glabrous on surface, or hirsute; with tubercle-based hairs. Ligule a fringe of hairs; 1-1.5 mm long. Leaf-blades 4-30 cm long; 2-10 mm wide; stiff; glaucous. Leaf-blade surface glabrous, or hirsute; sparsely hairy; with tubercle-based hairs.
    Inflorescences
    Inflorescence a panicle. Panicle open; pyramidal; 6-20 cm long. Primary panicle branches ascending. Panicle branches stiff. Spikelets appressed; solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; acute, or acuminate; 2.2-3.7(-3.9) mm long; 1-1.5 mm wide; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; acute, or acuminate; 2.2-3.7(-3.9) mm long; 1-1.5 mm wide; falling entire.
    Glume
    Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 0.33-0.66 length of spikelet; membranous; without keels; 5 -veined. Lower glume apex acute. Upper glume ovate; 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; ovate; 1 length of spikelet; membranous; 5 -veined; acute. Fertile lemma elliptic, or ovate; dorsally compressed; 2-3.5 mm long; indurate; dark brown; shiny; without keel. Lemma margins involute. Palea involute; indurate.
    Distribution
    North America: northwest USA, north-central USA, southwest USA, south-central USA, southeast USA, and Mexico.
    Reference
    Paniceae. Gr Texas 1994.

    Images

    Distribution

    Native to:

    Arizona, Colorado, Louisiana, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Southwest, New Mexico, Oklahoma, Texas, Utah

    Panicum hallii Vasey appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Hall, E. [816], Texas K000674450
    s.coll. [s.n.], Texas K000674451
    Hitchcock, A. S. [33], Texas Panicum filipes K000674452

    First published in Bull. Torrey Bot. Club 11: 61 (1884)

    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

    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