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

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

    [GB]
    Habit
    Perennial. Culms rambling; robust; 100-200 cm long; without nodal roots, or rooting from lower nodes. Culm-internodes terete; 4-20 cm long. Culm-nodes purple; glabrous. Leaf-sheaths 3.5-10 cm long; glabrous on surface, or pilose; outer margin hairy. Ligule a ciliolate membrane; 0.3-0.7 mm long. Leaf-blade base amplexicaul; with a brief petiole-like connection to sheath. Leaf-blades lanceolate, or ovate; 7-26 cm long; 10-30 mm wide. Leaf-blade venation with obscure cross veins. Leaf-blade surface glabrous, or pubescent; hairy on both sides. Leaf-blade margins ciliate; hairy at base. Leaf-blade apex attenuate.
    Inflorescences
    Inflorescence a panicle; exserted, or embraced at base by subtending leaf. Panicle open; ovate; 10-32 cm long; 4.5-17.5 cm wide; contracted about secondary branches. Primary panicle branches ascending, or spreading. Panicle axis scabrous. Panicle branches secund; scabrous; pubescent in axils. Spikelets in pairs. Fertile spikelets pedicelled. Pedicels 0.5-1.3 mm long.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 1.4-1.7 mm long; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 1.4-1.7 mm long; falling entire.
    Glume
    Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; clasping; 0.7-1 mm long; 0.33-0.5 length of spikelet; membranous; without keels; 3 -veined. Lower glume primary vein scabrous. Lower glume apex acute. Upper glume elliptic; 1-1.7 mm long; 0.9-1 length of spikelet; membranous; without keels; 3 -veined. Upper glume surface glabrous, or hispidulous. Upper glume apex obtuse.
    Florets
    Basal sterile florets male, or barren; with palea. Lemma of lower sterile floret similar to upper glume; elliptic; 1 length of spikelet; membranous; 5 -veined; glabrous, or hispidulous; acute. Palea of lower sterile floret 0.75 length of lemma. Fertile lemma elliptic; dorsally compressed; 1-1.4 mm long; 0.4-0.6 mm wide; indurate; without keel. Lemma margins involute. Lemma apex acute; scabrous. Palea embraced by lemma; involute; indurate.
    Fruits
    Caryopsis ellipsoid; 0.9 mm long. Embryo 0.4-0.5 length of caryopsis. Hilum punctiform.
    Distribution
    North America: Mexico. South America: Mesoamericana, northern South America, western South America, Brazil, and southern South America.
    Reference
    Paniceae. Zuloaga 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.; Orinoquia.
    Habit
    Hierba
    Conservation
    No Evaluada

    Images

    Distribution

    Native to:

    Argentina Northeast, Belize, Bolivia, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Colombia, Costa Rica, El Salvador, French Guiana, Guatemala, Guyana, Honduras, Mexico Gulf, Mexico Northeast, Mexico Southeast, Mexico Southwest, Nicaragua, Paraguay, Suriname, Uruguay, Venezuela

    Introduced into:

    Cuba

    Panicum hylaeicum Mez appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Trail, J.W.H. [1250], Brazil K001078431
    Trail, J.W.H. [1249], Brazil K001078432
    Burchell [8795], Brazil K000309213
    Spruce, R. [26], Brazil K000309214 isotype
    Spruce, R. [436], Brazil K000309216 isosyntype
    Spruce, R. [1061?], Brazil K000309217
    Swallen, J.R. [3595], Brazil K001078430
    Hitchcock, A.S. [17313] K000309212 Unknown type material
    Rojas, T. [276] K000309219 isotype
    Rojas, T. [276] K000309220 isotype
    Balansa, B. [49], Paraguay K000309218 isosyntype
    Hatschbach, G.G. [15801], Brazil K001078429
    Kozera, C. [1764], Brazil K001078428

    First published in Notizbl. Bot. Gart. Berlin-Dahlem 7: 75 (1917)

    Accepted by

    • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
    • Garcia-Mendoza, A.J. & Meave, J.A. (eds.) (2012). Diversidad florística de Oaxaca: de musgos a angiospermas (colecciones y listas de especies), ed. 2: 1-351. Instituto de Biología, Universidad Nacional Autónoma de México.
    • 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.
    • 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.
    • 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.
    • Garcia-Mendoza, A.J. & Meave, J.A. (eds.) (2012). Diversidad florística de Oaxaca: de musgos a angiospermas (colecciones y listas de especies), ed. 2: 1-351. Instituto de Biología, Universidad Nacional Autónoma de México.
    • 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.
    • 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.
    • 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