1. Family: Poaceae Barnhart
    1. Genus: Panicum L.
      1. Panicum validum Mez

        This species is accepted, and its native range is S. Brazil to NE. Argentina.

    [GB]
    Habit
    Perennial; caespitose. Culms robust; 30-150 cm long; 2.5-3.5 mm diam. Culm-internodes elliptical in section; thick-walled; 14.5-26.5 cm long; striate. Culm-nodes purple; glabrous. Leaf-sheaths 13-33 cm long; keeled. Ligule an eciliate membrane; 0.5-0.7 mm long. Leaf-blades 37-90 cm long; 9-11 mm wide. Leaf-blade midrib widened; keeled beneath. Leaf-blade surface glabrous; hairless except near base.
    Inflorescences
    Inflorescence a panicle. Panicle open; lanceolate, or oblong; 17-30 cm long. Primary panicle branches 20 in number; simple. Panicle branches pubescent in axils. Spikelets solitary. Fertile spikelets pedicelled. Pedicels angular; ciliate.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; 3-3.5 mm long; 1.3-2 mm wide; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; 3-3.5 mm long; 1.3-2 mm wide; falling entire.
    Glume
    Glumes reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 2-2.5 mm long; 0.66 length of spikelet; membranous; without keels; 1-5 -veined. Lower glume primary vein scaberulous. Lower glume apex acute; muticous, or mucronate. Upper glume oblong; 1 length of spikelet; membranous; without keels; 5-7 -veined. Upper glume apex acute.
    Florets
    Basal sterile florets male; with palea. Lemma of lower sterile floret similar to upper glume; ovate; 1 length of spikelet; membranous; 5 -veined; acute. Palea of lower sterile floret 1-2 mm long. Fertile lemma lanceolate; dorsally compressed; 3-3.4 mm long; indurate; pallid; shiny; without keel. Lemma margins involute. Palea involute; indurate.
    Flowers
    Anthers 0.5-1 mm long.
    Distribution
    South America: Brazil and southern South America.
    Reference
    Paniceae. Fl Entre Rios 1995.

    Distribution

    Native to:

    Argentina Northeast, Brazil South, Uruguay

    Panicum validum Mez appears in other Kew resources:

    First published in Beibl. Bot. Jahrb. Syst. 125: 4 (1921)

    Accepted by

    • Zuloaga, F.O., Morrone, O. , Belgrano, M.J., Marticorena, C. & Marchesi, E. (eds.) (2008). Catálogo de las Plantas Vasculares del Cono Sur Monographs in Systematic Botany from the Missouri Botanical Garden 107: 1-3348.
    • 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
    • Zuloaga, F.O., Morrone, O. , Belgrano, M.J., Marticorena, C. & Marchesi, E. (eds.) (2008). Catálogo de las Plantas Vasculares del Cono Sur Monographs in Systematic Botany from the Missouri Botanical Garden 107: 1-3348.

    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