1. Family: Poaceae Barnhart
    1. Genus: Cenchrus L.
      1. Cenchrus massaicus (Stapf) Morrone

        This species is accepted, and its native range is Somalia to Zimbabwe.

    [GB]
    Habit
    Perennial. Rhizomes short; knotty. Culms decumbent; 30-90 cm long; wiry, or woody. Lateral branches ample. Leaf-sheaths glabrous on surface, or pilose; with tubercle-based hairs. Leaf-sheath oral hairs lacking, or bearded. Ligule a fringe of hairs. Leaf-blades flat, or conduplicate; 3-25 cm long; 2-4 mm wide. Leaf-blade surface glabrous, or pilose; sparsely hairy; with tubercle-based hairs.
    Inflorescences
    Inflorescence a panicle. Peduncle scaberulous above. Panicle spiciform; linear, or oblong; 2-10 cm long. Primary panicle branches accrescent to a central axis; with sessile scars 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; oblong; 4-10 mm long; base bluntly stipitate (briefly). Involucral bristles deciduous with the fertile spikelets; numerous; with an outer whorl of thinner bristles; with longest bristle scarcely emergent; 4-10 mm long; terete; flexible; glabrous, or plumose.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; truncate; 3.5-5.5 mm long; falling entire; deciduous with accessory branch structures.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; truncate; 3.5-5.5 mm long; falling entire; deciduous with accessory branch structures.
    Glume
    Glumes similar; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 0.5 length of spikelet; membranous; without keels; 1-3 -veined. Lower glume surface asperulous (above). Lower glume apex acute. Upper glume elliptic; 0.66-0.75 length of spikelet; membranous; without keels; 5-7 -veined. Upper glume surface smooth, or asperulous; rough on veins. Upper glume apex acute.
    Florets
    Basal sterile florets male; with palea. Lemma of lower sterile floret elliptic; 1 length of spikelet; membranous; 5 -veined; smooth, or scaberulous; rough at apex; acuminate. Fertile lemma elliptic; 3.5-5.5 mm long; membranous; without keel; 5 -veined. Lemma margins flat. Lemma apex acuminate; mucronate. Palea membranous.
    Flowers
    Lodicules absent. Anthers 3; 2-2.5 mm long; anther tip smooth. Styles free to the base.
    Distribution
    Africa: northeast tropical, east tropical, and southern tropical.
    Reference
    Paniceae. FTEA.

    Images

    Distribution

    Native to:

    Kenya, Somalia, Tanzania, Zimbabwe

    Cenchrus massaicus (Stapf) Morrone appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Linton, A. [72], Kenya Pennisetum massaicum K000281225 lectotype
    Linton, A. [39], Kenya Pennisetum massaicum K000281226 isotype

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

    Literature

    Kew Backbone Distributions
    • Clayton, W.D. (1989). Flora Zambesiaca 10(3): 1-231. Royal Botanic Gardens, Kew.
    • Clayton, W.D. & Renvoize, S.A. (1982). Gramineae Flora of Tropical East Africa 3: 451-898.

    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