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

        This species is accepted, and its native range is S. Tropical America.

    [CPLC]

    Bernal, R., Gradstein, S.R. & Celis, M. (eds.). 2015. Catálogo de plantas y líquenes de Colombia. Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá. http://catalogoplantasdecolombia.unal.edu.co

    Distribution
    Nativa en Colombia; Alt. 1000 - 1500 m.; Andes.
    Habit
    Hierba
    Conservation
    No Evaluada
    [GB]
    Habit
    Annual; caespitose. Culms decumbent; 10-30 cm long. Culm-internodes 1.5-7 cm long; distally glabrous, or hirsute. Culm-nodes pallid, or brown; pubescent. Lateral branches ample. Leaf-sheaths 1-4 cm long; mostly shorter than adjacent culm internode; hirsute; with tubercle-based hairs; outer margin hairy. Ligule a ciliate membrane; 0.5-1.5 mm long. Collar pubescent. Leaf-blades lanceolate; 2-6 cm long; 2-4 mm wide. Leaf-blade surface pilose; with simple hairs, or tubercle-based hairs. Leaf-blade margins cartilaginous; scabrous; ciliate. Leaf-blade apex acuminate.
    Inflorescences
    Inflorescence a panicle. Peduncle hirsute above. Panicle open; pyramidal; effuse; 2.5-8 cm long; 2-6 cm wide. Panicle axis glabrous, or pilose. Panicle branches glabrous, or pilose; bearded in axils. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 2-10 mm long.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; acuminate; 2.6-3 mm long; 0.8-1 mm wide; falling entire; readily shedding fertile florets and readily shedding glumes (upper glume).
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; acuminate; 2.6-3 mm long; 0.8-1 mm wide; falling entire; readily shedding fertile florets and readily shedding glumes (upper glume).
    Glume
    Glumes reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 1.7-2.2 mm long; 0.75-0.8 length of spikelet; membranous; without keels; 5 -veined. Lower glume primary vein scabrous. Lower glume apex acuminate. Upper glume ovate; 1 length of spikelet; membranous; without keels; 7 -veined. Upper glume primary vein scabrous. Upper glume apex acute, or acuminate.
    Florets
    Basal sterile florets barren; with palea. Lemma of lower sterile floret similar to upper glume; ovate; 1 length of spikelet; membranous; 7 -veined; acute. Palea of lower sterile floret 1.2-1.7 mm long. Fertile lemma elliptic; dorsally compressed; 1.4-2 mm long; indurate; black; without keel; 5-7 -veined. Lemma margins involute. Palea involute; indurate.
    Fruits
    Caryopsis with adherent pericarp; 1.1-1.4 mm long. Embryo 0.5 length of caryopsis. Hilum punctiform.
    Distribution
    South America: western South America, Brazil, and southern South America.
    Reference
    Paniceae. Fl Paraguay 1995.

    Images

    Distribution

    Native to:

    Bolivia, Brazil North, Brazil Northeast, Brazil Southeast, Brazil West-Central, Colombia, Paraguay, Venezuela

    Panicum exiguum Mez appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 1995 Filgueiras, T.S. [2443], Brazil K001078555
    Jan 1, 1990 Brooks, R.R. [11], Brazil K001078556
    Jan 1, 1973 Irwin, H.S. [24519], Brazil K001078561
    Jan 1, 1964 Eiten, G. [3956], Brazil K001078559
    Jan 1, 1964 Eiten, G. [4504], Brazil K001078560
    Swallen, J.R. [3852], Brazil K001078557
    Swallen, J.R. [4106], Brazil K001078558
    Burchell, W.J. [6827], Brazil K001078562
    Macedo, A. [2192], Brazil K001078554
    Mexia, Y.E.J. [5622], Brazil K001078563
    Mexia, Y.E.J. [5622], Brazil K001078564
    Hatschbach, G.G. [74887], Brazil K001078565

    First published in Beibl. Bot. Jahrb. Syst. 125: 3 (1921)

    Accepted by

    • Giraldo-Cañas, D. (2011). Catálogo de la familia Poaceae en Colombia Darwiniana 49: 139-247.
    • 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.
    • Hokche, O., Berry, P.E. & Huber, O. (eds.) (2008). Nuevo Catálogo de la Flora Vascular de Venezuela: 1-859. Fundación Instituto Botánico de Venezuela.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Renvoize, S.A. (1998). Gramineas de Bolivia: 1-644. The Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions
    • Forzza, R.C. & al. (2013). Lista de Espécies da Flora do Brasil http://floradobrasil.jbrj.gov.br/2010/.
    • Giraldo-Cañas, D. (2011). Catálogo de la familia Poaceae en Colombia Darwiniana 49: 139-247.
    • 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.
    • Hokche, O., Berry, P.E. & Huber, O. (eds.) (2008). Nuevo Catálogo de la Flora Vascular de Venezuela: 1-859. Fundación Instituto Botánico de Venezuela.
    • Renvoize, S.A. (1998). Gramineas de Bolivia: 1-644. The Royal Botanic Gardens, Kew.

    Sources

    Catálogo de Plantas y Líquenes de Colombia
    http://creativecommons.org/licenses/by-nc-sa/3.0

    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