1. Family: Poaceae Barnhart
    1. Genus: Panicum L.
      1. Panicum vaseyanum Scribn. ex Beal

        This species is accepted, and its native range is Mexico.

    [GB]
    Habit
    Annual. Culms decumbent; 50-70 cm long; rooting from lower nodes. Leaf-sheaths inflated. Ligule a ciliolate membrane; 1-2 mm long. Leaf-blades 5-10 cm long; 3-8 mm wide.
    Inflorescences
    Inflorescence a panicle; terminal and axillary; subtended by an inflated leaf-sheath; embraced at base by subtending leaf. Panicle open; lanceolate; 4-7 cm long; 1 cm wide. Primary panicle branches ascending. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 3-4 mm long.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; subacute; 2-2.6 mm long; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; subacute; 2-2.6 mm long; falling entire.
    Glume
    Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 0.4-0.8 mm long; 0.25-0.33 length of spikelet; membranous; without keels. Lower glume apex obtuse, or acute. Upper glume ovate; 1 length of spikelet; membranous; without keels. 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; acute. Fertile lemma elliptic; dorsally compressed; 2-2.6 mm long; indurate; pallid, or light green, or light brown; shiny; without keel. Lemma margins involute. Lemma apex acute. Palea involute; indurate.
    Distribution
    North America: Mexico.
    Reference
    Paniceae. Fl Nov Gal 1994.

    Images

    Distribution

    Native to:

    Mexico Central, Mexico Northeast, Mexico Southeast, Mexico Southwest

    Panicum vaseyanum Scribn. ex Beal appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Pringle, C.G. [1415], Mexico K000309146 isotype

    First published in Grass. N. Amer. 2: 140 (1896)

    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.

    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.

    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