1. Family: Poaceae Barnhart
    1. Genus: Panicum L.
      1. Panicum pycnoclados Tutin

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

    [GB]
    Habit
    Perennial. Culms leaning; 12-60 cm long; rooting from lower nodes. Culm-internodes terete; 3-15 cm long; distally glabrous, or hirsute. Culm-nodes constricted; pubescent. Lateral branches ample; arising from upper culm. Leaf-sheaths 2-5 cm long; glabrous on surface, or hirsute; outer margin hairy. Ligule a ciliate membrane; 1-1.5 mm long. Collar pubescent. Leaf-blade base amplexicaul; asymmetrical. Leaf-blades lanceolate, or oblong; 2-4.5 cm long; 5-18 mm wide. Leaf-blade surface glabrous to pilose; sparsely hairy, or moderately hairy, or densely hairy. Leaf-blade margins scabrous; ciliate; hairy at base. Leaf-blade apex acute.
    Inflorescences
    Inflorescence a panicle. Peduncle 6-20 cm long; glabrous, or pubescent above. Panicle open; ovate; 3-6 cm long; 1.5-6 cm wide. Primary panicle branches not whorled, or whorled at lower nodes. Panicle axis eglandular; smooth, or tuberculate; glabrous, or pilose. Panicle branches flexuous; eglandular; glabrous in axils, or pubescent in axils. Spikelets solitary. Fertile spikelets pedicelled. Pedicels glabrous, or ciliate; hairy above.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 2.2-3 mm long; 0.8-0.9 mm wide; falling entire. Rhachilla internodes elongated between glumes.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 2.2-3 mm long; 0.8-0.9 mm wide; falling entire. Rhachilla internodes elongated between glumes.
    Glume
    Glumes similar; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; clasping; 1.2-1.8 mm long; 0.5-0.75 length of spikelet; membranous; without keels; 3(-5) -veined. Lower glume apex acuminate. Upper glume elliptic; 1.9-2.7 mm long; 0.9 length of spikelet; membranous; without keels; 9 -veined. Upper glume surface glabrous, or pilose. Upper glume apex acute.
    Florets
    Basal sterile florets barren; with palea. Lemma of lower sterile floret similar to upper glume; elliptic; 1 length of spikelet; membranous; 7-9 -veined; glabrous, or pilose; acute. Palea of lower sterile floret 1.5-1.8 mm long; 1 length of lemma. Fertile lemma elliptic; dorsally compressed; 1.8-2 mm long; 0.8 mm wide; indurate; without keel. Lemma surface scaberulous; rough above. Lemma margins involute. Lemma apex acute; laterally pinched (slightly). Palea involute; indurate.
    Flowers
    Anthers 3; 0.8 mm long.
    Fruits
    Caryopsis with adherent pericarp; ellipsoid; 1.5 mm long. Embryo 0.33 length of caryopsis. Hilum punctiform.
    Distribution
    South America: northern South America, western South America, and Brazil.
    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.
    Habit
    Hierba
    Conservation
    No Evaluada

    Images

    Distribution

    Native to:

    Brazil Northeast, Brazil Southeast, Colombia, Ecuador, Guyana, Peru, Suriname, Venezuela

    Panicum pycnoclados Tutin appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Tutin, T.G. [508] K000309283 isotype
    Steyermark, J.A. [535], Venezuela K000309314 isotype
    Steyermark, J.A. [475], Venezuela K000309315 isotype

    First published in J. Bot. 72: 340 (1934)

    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.
    • Jørgensen, P.M. & León-Yánez, S. (eds.) (1999). Catalogue of the Vascular Plants of Ecuador Monographs in Systematic Botany from the Missouri Botanical Garden 75: i-viii, 1-1181.
    • 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.

    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.
    • Hokche, O., Berry, P.E. & Huber, O. (eds.) (2008). Nuevo Catálogo de la Flora Vascular de Venezuela: 1-859. Fundación Instituto Botánico de Venezuela.
    • Jørgensen, P.M. & León-Yánez, S. (eds.) (1999). Catalogue of the Vascular Plants of Ecuador Monographs in Systematic Botany from the Missouri Botanical Garden 75: i-viii, 1-1181.
    • 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.
    • Brako, L. & Zarucchi, J.L. (1993). Catalogue of the Flowering Plants and Gymnosperms of Peru Monographs in Systematic Botany from the Missouri Botanical Garden 45: i-xl, 1-1286.

    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