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  1. Family: Poaceae Barnhart
    1. Genus: Agenium Nees

      1. Agenium leptocladum (Hack.) Clayton

        This species is accepted, and its native range is Brazil to NE. Argentina.

    [GB]
    Habit
    Perennial; caespitose. Basal innovations extravaginal. Culms erect; slender; 50-60 cm long. Ligule a ciliolate membrane; 1.5 mm long. Leaf-blades 6-10 cm long; 2-3 mm wide. Leaf-blade surface glabrous, or pilose. Leaf-blade apex attenuate.
    Inflorescences
    Inflorescence composed of racemes. Peduncle scaberulous above. Racemes 1; single; erect; 3.5-4.5 cm long. Rhachis fragile at the nodes; flattened; ciliate on margins. Rhachis internodes linear; 3 mm long. Rhachis internode tip oblique; flat. Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels filiform; flattened; 3 mm long; ciliate.
    Spikelets
    Basal sterile spikelets well-developed; 8-12 in number; male; lanceolate; 7-9 mm long; equalling fertile. Basal sterile spikelet glumes herbaceous. Companion sterile spikelets well-developed; male; lanceolate; dorsally compressed; 7-10 mm long; as long as fertile; separately deciduous. Companion sterile spikelet callus square; 0.5 mm long; obtuse. Companion sterile spikelet glumes herbaceous; acute. Companion sterile spikelet lemmas 2; enclosed by glumes. Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 7-8 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus cuneate; 1-2 mm long; pilose; base pungent; attached obliquely.
    Sterile
    Basal sterile spikelets well-developed; 8-12 in number; male; lanceolate; 7-9 mm long; equalling fertile. Basal sterile spikelet glumes herbaceous. Companion sterile spikelets well-developed; male; lanceolate; dorsally compressed; 7-10 mm long; as long as fertile; separately deciduous. Companion sterile spikelet callus square; 0.5 mm long; obtuse. Companion sterile spikelet glumes herbaceous; acute. Companion sterile spikelet lemmas 2; enclosed by glumes.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 7-8 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus cuneate; 1-2 mm long; pilose; base pungent; attached obliquely.
    Glume
    Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume elliptic; 7-8 mm long; 1 length of spikelet; coriaceous; without keels; 8 -veined. Lower glume surface with a longitudinal median groove; pubescent. Lower glume apex obtuse. Upper glume lanceolate; coriaceous; without keels. Upper glume apex obtuse.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret elliptic; 3 mm long; hyaline. Fertile lemma linear; 4 mm long; cartilaginous; without keel; 1 -veined. Lemma apex entire; acute; awned; 1 -awned. Principal lemma awn geniculate; 20-50 mm long overall; with twisted column. Column of lemma awn pubescent. Palea absent or minute.
    Fruits
    Disseminule comprising a spikelet.
    Distribution
    South America: Brazil and southern South America.
    Reference
    Andropogoneae. WDC.

    Images

    Distribution

    Native to:

    Argentina Northeast, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Paraguay

    Agenium leptocladum (Hack.) Clayton appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Apr 1, 2014 Ratter, J.A. [949], Brazil K001072021
    Apr 1, 2014 Burman, A.G. [415], Brazil K001072028
    Jan 1, 2014 Clayton, W.D. [4806], Brazil K001072026
    Jan 1, 2014 Ratter, J.A. [949], Brazil K001072024
    Jan 1, 2014 Sellow [s.n.], Brazil K001072795
    Jan 1, 2014 Argent, G.C.G. [6452], Brazil K001072027
    Jan 1, 2014 Glaziou, A.F.M. [22591], Brazil K001072023
    Jan 1, 2014 Glaziou, A.F.M. [22438], Brazil K001072025
    Jan 1, 1974 Anderson, W.R. [8279], Brazil K001072029
    Clayton, W.D. [4868], Brazil K001072022
    Smith, L.B. [14413], Brazil K001072014
    Smith, L.B. [14800], Brazil K001072016
    Balansa [222], Paraguay K000632825
    Jonsson, G. [152/A], Brazil K001072019
    Hatschbach, G.G. [13975], Brazil K001072017
    Hatschbach, G.G. [18717], Brazil K001072018
    Hatschbach, G.G. [12092], Brazil K001072020
    Dombrowski, L.T.D [2506], Brazil K001072015
    Glaziou, A.F.M. [22571], Brazil Agenium goyazense K000632826

    First published in Kew Bull. 27: 447 (1972)

    Accepted by

    • 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.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of 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/.
    • 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.

    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