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  1. Family: Poaceae Barnhart
    1. Genus: Urochloa P.Beauv.
      1. Urochloa megastachya (Nees ex Trin.) Morrone & Zuloaga

        This species is accepted, and its native range is SE. Brazil.

    [GB]
    Habit
    Perennial. Culms 120-200 cm long. Culm-nodes glabrous. Leaf-sheaths glabrous on surface. Ligule a ciliate membrane; 1-1.5 mm long. Leaf-blade base broadly rounded. Leaf-blades lanceolate; 6-12 cm long; 8-10 mm wide. Leaf-blade surface pubescent; hairy adaxially. Leaf-blade margins scabrous. Leaf-blade apex acuminate.
    Inflorescences
    Inflorescence composed of racemes. Racemes 8-12; borne along a central axis; unilateral; 5-20 cm long. Central inflorescence axis 10-20 cm long; pilose. Rhachis wingless; angular; pubescent on surface. Spikelet packing distant; irregular. Spikelets solitary, or in pairs, or in threes. Fertile spikelets sessile and pedicelled. Pedicels filiform; 1-12 mm long; ciliate.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; compressed slightly; acute; 3.8-3.9 mm long; 1.4-1.5 mm wide; falling entire. Spikelet callus square; incorporating lowest rhachilla internode with adnate lower glume; 0.5 mm long.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; compressed slightly; acute; 3.8-3.9 mm long; 1.4-1.5 mm wide; falling entire. Spikelet callus square; incorporating lowest rhachilla internode with adnate lower glume; 0.5 mm long.
    Glume
    Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; clasping; 1.8-2.2 mm long; 0.5-0.6 length of spikelet; membranous; without keels; 3-5 -veined. Lower glume apex acute. Upper glume ovate; 1 length of spikelet; membranous; without keels; 5-7 -veined. Upper glume apex obtuse, or 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; ciliate on margins; acute. Fertile lemma elliptic; 3.2-3.4 mm long; 1.1-1.3 mm wide; indurate; without keel. Lemma surface papillose. Lemma margins involute. Lemma apex acute. Palea involute; indurate; without keels.
    Distribution
    South America: Brazil.
    Reference
    Paniceae. Zuloaga.

    Images

    Distribution

    Native to:

    Brazil Southeast

    Synonyms

    Other Data

    Urochloa megastachya (Nees ex Trin.) Morrone & Zuloaga appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Brazil Brachiaria megastachya K000309378
    Riedel [s.n.], Brazil Brachiaria megastachya K000309379

    Bibliography

    First published in Darwiniana 31: 84 (1992)

    Not 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. [Cited as Brachiaria megastachya.]

    Literature

    Kew Backbone Distributions

    • Forzza, R.C. & al. (2013). Lista de Espécies da Flora do Brasil http://floradobrasil.jbrj.gov.br/2010/.

    Sources

    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 2020. 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 2020. 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