1. Family: Poaceae Barnhart
    1. Genus: Panicum L.
      1. Panicum cayennense Lam.

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

    [GB]
    Habit
    Annual; caespitose. Culms erect, or geniculately ascending; 18-40 cm long; 1-2 mm diam. Culm-internodes distally glabrous, or hispid; with tubercle-based hairs. Lateral branches ample; arising from lower culm and mid culm. Leaf-sheaths hispid; with tubercle-based hairs. Ligule a ciliate membrane; 0.8-1.2 mm long. Leaf-blades 9-13 cm long; 5-8 mm wide. Leaf-blade surface pilose; with tubercle-based hairs.
    Inflorescences
    Inflorescence a panicle; terminal and axillary. Axillary inflorescences intermingled with terminal. Panicle open; ovate; 5-16 cm long; 4-8 cm wide. Primary panicle branches branching divaricately. Panicle branches scabrous; pubescent in axils. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets obovate; dorsally compressed; cuspidate; 2.1-2.3 mm long; falling entire. Rhachilla internodes elongated between glumes. Rhachilla elongation 0.4 mm long.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets obovate; dorsally compressed; cuspidate; 2.1-2.3 mm long; falling entire. Rhachilla internodes elongated between glumes. Rhachilla elongation 0.4 mm long.
    Glume
    Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 1.3-1.6 mm long; 0.6-0.7 length of spikelet; membranous; without keels; 5 -veined. Lower glume apex acute. Upper glume ovate; 1.8-2 mm long; 1 length of spikelet; membranous; without keels; 7 -veined. Upper glume apex acute.
    Florets
    Basal sterile florets barren; with palea. Lemma of lower sterile floret similar to upper glume; ovate; 1.8-2 mm long; 1 length of spikelet; membranous; 5 -veined; acute. Palea of lower sterile floret 0.75-0.8 length of lemma. Fertile lemma elliptic; dorsally compressed; 1.4-1.5 mm long; indurate; shiny; without keel. Lemma margins involute. Palea involute; indurate.
    Flowers
    Anthers 3; 0.7-0.9 mm long; purple.
    Distribution
    North America: Mexico. South America: Mesoamericana, Caribbean, northern South America, western South America, and Brazil.
    Reference
    Paniceae. Fl Costa Rica 1994.
    [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. 0 - 500 m.; Amazonia, Guayana y Serranía de La Macarena, Orinoquia.
    Habit
    Hierba
    Conservation
    No Evaluada

    Images

    Distribution

    Native to:

    Belize, Bolivia, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Colombia, Costa Rica, Cuba, Dominican Republic, French Guiana, Guatemala, Haiti, Honduras, Jamaica, Mexico Southeast, Mexico Southwest, Nicaragua, Panamá, Suriname, Venezuela

    Panicum cayennense Lam. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 1993 Hatschbach, G.G. [58947], Brazil K001078540
    Jan 1, 1973 Prance, G.T. [8831], Brazil K001078545
    Jan 1, 1973 Prance, G.T. [3517], Brazil K001078547
    Jan 1, 1973 Prance, G.T. [8177], Brazil K001078548
    Jan 1, 1973 Prance, G.T. [8600], Brazil K001078544
    Trail, J.W.H. [1242], Brazil K001078546
    Trail, J.W.H. [1241], Brazil K001078542
    Pedersen, T.M. [11088], Brazil K001078538
    Ratter, J.A. [4135], Brazil K001078539
    Swallen, J.R. [3674], Brazil K001078543
    Burchell, W.J. [8350], Brazil K001078541

    First published in Tabl. Encycl. 1: 173 (1791)

    Accepted by

    • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
    • Giraldo-Cañas, D. (2011). Catálogo de la familia Poaceae en Colombia Darwiniana 49: 139-247.
    • Hokche, O., Berry, P.E. & Huber, O. (eds.) (2008). Nuevo Catálogo de la Flora Vascular de Venezuela: 1-859. Fundación Instituto Botánico de Venezuela.
    • Nelson Sutherland, C.H. (2008). Catálogo de las plantes vasculares de Honduras. Espermatofitas: 1-1576. SERNA/Guaymuras, Tegucigalpa, Honduras.
    • 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.
    • Stevens, W.D., Ulloa U., C., Pool, A. & Montiel, O.M. (2001). Flora de Nicaragua Monographs in Systematic Botany from the Missouri Botanical Garden 85: i-xlii, 1-2666.
    • Renvoize, S.A. (1998). Gramineas de Bolivia: 1-644. The Royal Botanic Gardens, Kew.
    • Boggan, J. Funck, V. & Kelloff, C. (1997). Checklist of the Plants of the Guianas (Guyana, Surinam, Franch Guiana) ed. 2: 1-238. University of Guyana, Georgetown.
    • Davidse, G. & al. (eds.) (1994). Flora Mesoamericana 6: 1-543. Universidad Nacional Autónoma de México, México, D.F.

    Literature

    Kew Backbone Distributions
    • Forzza, R.C. & al. (2013). Lista de Espécies da Flora do Brasil http://floradobrasil.jbrj.gov.br/2010/.
    • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
    • Giraldo-Cañas, D. (2011). Catálogo de la familia Poaceae en Colombia Darwiniana 49: 139-247.
    • Hokche, O., Berry, P.E. & Huber, O. (eds.) (2008). Nuevo Catálogo de la Flora Vascular de Venezuela: 1-859. Fundación Instituto Botánico de Venezuela.
    • Nelson Sutherland, C.H. (2008). Catálogo de las plantes vasculares de Honduras. Espermatofitas: 1-1576. SERNA/Guaymuras, Tegucigalpa, Honduras.
    • 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.
    • Stevens, W.D., Ulloa U., C., Pool, A. & Montiel, O.M. (2001). Flora de Nicaragua Monographs in Systematic Botany from the Missouri Botanical Garden 85: i-xlii, 1-2666.
    • Renvoize, S.A. (1998). Gramineas de Bolivia: 1-644. The Royal Botanic Gardens, Kew.
    • Boggan, J. Funck, V. & Kelloff, C. (1997). Checklist of the Plants of the Guianas (Guyana, Surinam, Franch Guiana) ed. 2: 1-238. University of Guyana, Georgetown.
    • Davidse, G. & al. (eds.) (1994). Flora Mesoamericana 6: 1-543. Universidad Nacional Autónoma de México, México, D.F.

    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