1. Family: Poaceae Barnhart
    1. Genus: Cenchrus L.
      1. Cenchrus pilcomayensis (Mez) Morrone

        This species is accepted, and its native range is Paraguay to N. Argentina.

    [GB]
    Habit
    Perennial. Cataphylls evident. Rhizomes elongated. Culms 100-200 cm long. Culm-internodes thick-walled; distally pruinose. Lateral branches ample. Leaf-sheaths deciduous; glabrous on surface. Ligule a fringe of hairs. Leaf-blades flat, or convolute; 15-25 cm long; 5-8 mm wide. Leaf-blade apex acuminate.
    Inflorescences
    Inflorescence a panicle. Panicle spiciform; linear; 6-14 cm long. Primary panicle branches accrescent to a central axis; with sessile scars on axis. Panicle axis terete; pubescent; bearing deciduous spikelet clusters. Spikelets subtended by an involucre. Fertile spikelets sessile; 1 in the cluster. Involucre composed of bristles; 9-10 mm long; base truncate. Involucral bristles deciduous with the fertile spikelets; numerous; with longest bristle scarcely emergent; terete; flexible; antrorsely scaberulous; glabrous.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 3.3-5.5 mm long; falling entire; deciduous with accessory branch structures.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 3.3-5.5 mm long; falling entire; deciduous with accessory branch structures.
    Glume
    Glumes reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 0.33 length of spikelet; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 1 length of spikelet; membranous; without keels; 7 -veined. Upper glume apex acute.
    Florets
    Basal sterile florets male, or barren; with palea. Lemma of lower sterile floret oblong; 1 length of spikelet; membranous; 5 -veined; acute. Fertile lemma lanceolate; 3-5 mm long; coriaceous; without keel. Lemma margins flat. Lemma apex acute. Palea 1 length of lemma; coriaceous.
    Flowers
    Lodicules absent. Anthers 3.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    South America: southern South America.
    Reference
    Paniceae. Turpe 1994.

    Distribution

    Native to:

    Argentina Northeast, Argentina Northwest, Paraguay

    Cenchrus pilcomayensis (Mez) Morrone appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Apr 1, 1970 Pedersen, T.M. [9671], Argentina Pennisetum frutescens K000458156
    Jan 1, 1942 Cordini [89], Argentina Pennisetum frutescens K000458155
    Rosengurtt [5830], Paraguay Pennisetum frutescens K000458154
    Job, M.M. [1175], Argentina Pennisetum frutescens K000458157

    First published in Ann. Bot. (Oxford) 106: 128 (2010)

    Literature

    Kew Backbone Distributions
    • 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.

    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