1. Family: Poaceae Barnhart
    1. Genus: Cenchrus L.
      1. Cenchrus prolificus (Chase) Morrone

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

    [GB]
    Habit
    Perennial; caespitose. Culms robust; 200-400 cm long. Culm-internodes distally glabrous. Lateral branches fastigiate; arising from upper culm. Leaf-sheaths loose; glabrous on surface; outer margin glabrous, or hairy. Ligule a ciliate membrane; 2 mm long. Leaf-blades 15-50 cm long; 20-40 mm wide. Leaf-blade surface smooth, or scaberulous; rough adaxially; glabrous.
    Inflorescences
    Synflorescence compound. Inflorescence a panicle; terminal and axillary; subtended by an inflated leaf-sheath. Peduncle flexuous; 2-10 cm long; glabrous. Panicle spiciform; linear, or oblong; 3-5 cm long; 1 cm wide. Primary panicle branches accrescent to a central axis; with lateral stumps on axis. Panicle axis angular; scaberulous; glabrous; bearing deciduous spikelet clusters. Spikelets subtended by an involucre. Fertile spikelets sessile; 1 in the cluster. Involucre composed of bristles; 4-6 mm long; base truncate. Involucral bristles deciduous with the fertile spikelets; numerous; with one conspicuously longer bristle; 15-20 mm long; terete; flexible; glabrous.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; 4-6.2 mm long; falling entire; deciduous with accessory branch structures.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; 4-6.2 mm long; falling entire; deciduous with accessory branch structures.
    Glume
    Glumes shorter than spikelet; thinner than fertile lemma. Lower glume lanceolate; 0.5-1.2 mm long; 0.1-0.2 length of spikelet; membranous; without keels; 0 -veined. Lower glume lateral veins absent. Lower glume apex erose; obtuse. Upper glume ovate; 1.8-2.5 mm long; 0.4-0.5 length of spikelet; membranous; without keels. Upper glume apex obtuse.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret ovate; 4-5.4 mm long; 1 length of spikelet; membranous; scaberulous; acute. Fertile lemma ovate; 3.8-5.4 mm long; chartaceous; without keel. Lemma margins flat. Lemma apex acute. Palea 1 length of lemma; membranous.
    Flowers
    Lodicules absent. Anthers 3.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    North America: Mexico.
    Reference
    Paniceae. Chase 2002.

    Images

    Distribution

    Native to:

    Mexico Gulf, Mexico Southwest

    Cenchrus prolificus (Chase) Morrone appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Hinton, G.B. [3166], México State Pennisetum prolificum K000476251
    Hinton, G.B. [3166], México State Pennisetum prolificum K000476252
    Hinton, G.B. [14030], Guerrero Pennisetum prolificum K000476253
    Hinton, G.B. [3229], México State Pennisetum prolificum K000476254
    Pringle, C.G. [6075], Mexico Pennisetum prolificum K000643108 Unknown type material

    First published in Ann. Bot. (Oxford) 106: 129 (2010)

    Literature

    Kew Backbone Distributions
    • 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.

    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 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