1. Family: Poaceae Barnhart
    1. Genus: Cenchrus L.
      1. Cenchrus sieberianus (Schltdl.) Verloove

        This species is accepted, and its native range is W. Tropical Africa to Sahara and Angola.

    [GB]
    Habit
    Annual. Culms robust; 100-300 cm long. Ligule a fringe of hairs. Leaf-blades 50-100 cm long; 20-40 mm wide.
    Inflorescences
    Inflorescence a panicle. Panicle spiciform; linear; 5-150 cm long; 1-3 cm wide. Primary panicle branches accrescent to a central axis; with lateral stumps on axis. Panicle axis terete; pubescent; bearing deciduous spikelet clusters. Spikelets subtended by an involucre. Fertile spikelets sessile; 2 in the cluster. Involucre composed of bristles; oblong; 6-9 mm long; base bluntly stipitate (0.2-1.5mm). Involucral bristles deciduous with the fertile spikelets; numerous; with longest bristle scarcely emergent, or with one conspicuously longer bristle; 10-25 mm long; terete; flexible; glabrous, or ciliate.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate, or elliptic, or obovate; dorsally compressed; 4-6 mm long; falling entire; deciduous with accessory branch structures.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate, or elliptic, or obovate; dorsally compressed; 4-6 mm long; falling entire; deciduous with accessory branch structures.
    Glume
    Glumes both absent or obscure, or one the lower absent or obscure; shorter than spikelet; thinner than fertile lemma. Upper glume oblong; 1-3 mm long; 0.25-0.5 length of spikelet; membranous; without keels; 0-3 -veined. Upper glume primary vein absent, or distinct. Upper glume apex obtuse, or acute.
    Florets
    Basal sterile florets male, or barren; with palea, or without significant palea. Lemma of lower sterile floret lanceolate, or oblong; 1.5-6 mm long; 0.33-1 length of spikelet; chartaceous; 3-5 -veined; ciliolate on margins; emarginate, or obtuse. Fertile lemma lanceolate, or ovate; 3.5-5.5 mm long; coriaceous; without keel. Lemma margins flat; pubescent. Lemma apex truncate to acuminate. Palea coriaceous.
    Flowers
    Lodicules absent. Anthers 3; anther tip penicillate. Styles connate below.
    Fruits
    Caryopsis with adherent pericarp; ellipsoid, or ovoid; isodiametric, or dorsally compressed; concealed by floret, or exposed between gaping lemma and palea at maturity; 2-4.5 mm long; truncate, or obtuse.
    Distribution
    Africa: north and northeast tropical. Asia-temperate: Arabia.
    Reference
    Paniceae. Brunken.
    [FWTA]

    Gramineae, W. D. Clayton. Flora of West Tropical Africa 3:2. 1972

    Habit
    Coarse annuals 1–1·5 m. high, usually in proximity to the cultivated species.

    Images

    Distribution

    Native to:

    Algeria, Angola, Benin, Burkina, Cameroon, Chad, Egypt, Eritrea, Ethiopia, Gambia, Libya, Mauritania, Nigeria, Senegal, Sudan, Togo

    Introduced into:

    Gulf States, Oman, Saudi Arabia, Yemen

    Cenchrus sieberianus (Schltdl.) Verloove appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Barbosa, E. [459], Brazil Pennisetum sieberianum K001106084
    Barter [1376], Nigeria Pennisetum sieberianum K000281302 holotype

    First published in Willdenowia 42: 78 (2012)

    Literature

    Kew Backbone Distributions
    • Dobignard, A. & Chatelain, C. (2013). Index synonymique de la flore d'Afrique du nord 5: 1-451. Éditions des conservatoire et jardin botaniques, Genève.
    • Thiombiano, A., Schmidt, M., Dressler, S., Ouédraogo, A., Hahn, K. & Zizka, G. (2012). Catalogue des plantes vasculaires du Burkina Faso Boissiera 65: 1-391.
    • Onana, J.M. (2011). The vascular plants of Cameroon a taxonomic checklist with IUCN assessments: 1-195. National herbarium of Cameroon, Yaoundé.
    • Dobignard, D. & Chatelain, C. (2010). Index synonymique de la flore d'Afrique du nord 1: 1-455. Éditions des conservatoire et jardin botaniques, Genève.
    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • Cope, T.A., Knees, S.G. & Miller, A.G. (2007). Flora of the Arabian peninsula and Socotra 5(1): 1-387. Edinburgh University Press.
    • Akoègninou, A., van der Burg, W.J. & van der Maesen, L.J.G. (eds.) (2006). Flore Analytique du Bénin: 1-1034. Backhuys Publishers.
    • Hedberg, I. & Edwards, S. (eds.) (1995). Flora of Ethiopia and Eritrea 7: 1-430. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.
    • Brunel, J.F., Hiepo, P. & Scholz, H. (eds.) (1984). Flore Analytique du Togo Phanérogames: 1-751. GTZ, Eschborn.
    • Hepper, F.N. (ed.) (1972). Flora of West Tropical Africa, ed. 2, 3(2): 277-574.
    • Lebrun, J.-P., Audru, J., Gaston, A. & Mosnier, M. (1972). Catalogue des Plantes Vasculaires du Tchad Méridional: 1-289. Institut d' Elevage et de Médecine Vétérinaire des Pays Tropicaux, Maisons Alfort.

    Sources

    Flora of West Tropical Africa
    Flora of West Tropical Africa
    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