1. Family: Poaceae Barnhart
    1. Genus: Cenchrus L.
      1. Cenchrus yemensis (Deflers) ined.

        This species is accepted, and its native range is Eritrea, Arabian Peninsula.

    [GB]
    Habit
    Perennial; caespitose; clumped densely. Rootstock evident. Rhizomes short, or elongated. Culms erect; 20-40(-100) cm long. Ligule a fringe of hairs. Leaf-blades 1-3 mm wide.
    Inflorescences
    Inflorescence a panicle. Panicle spiciform; oblong; 6-12(-16) cm long. Primary panicle branches accrescent to a central axis; with lateral stumps on axis. Panicle axis with rounded ribs; pubescent, or pilose; bearing deciduous spikelet clusters. Spikelets subtended by an involucre. Fertile spikelets sessile, or sessile and pedicelled; 1-3 in the cluster; 1 sessile. Involucre composed of bristles; oblong; 20-30 mm long; base bluntly stipitate; base 1.7 mm long; base villous. Involucral bristles deciduous with the fertile spikelets; numerous; in one whorl; with one conspicuously longer bristle; 30-40 mm long; terete; flexible; plumose.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension, or with a barren rhachilla extension. Spikelets lanceolate; dorsally compressed; 8.5-10 mm long; falling entire; deciduous with accessory branch structures.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension, or with a barren rhachilla extension. Spikelets lanceolate; dorsally compressed; 8.5-10 mm long; falling entire; deciduous with accessory branch structures.
    Glume
    Glumes one the lower absent or obscure, or two; dissimilar; shorter than spikelet; thinner than fertile lemma. Lower glume ovate, or orbicular; 0-1 mm long; 0.1 length of spikelet; hyaline; without keels; 0 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume lanceolate; 0.33-0.5 length of spikelet; membranous; without keels. Upper glume apex acute.
    Florets
    Basal sterile florets male, or barren; with palea. Lemma of lower sterile floret lanceolate; 1 length of spikelet; membranous; 7-9 -veined; acuminate. Fertile lemma oblong; 8-9 mm long; coriaceous; much thinner above; without keel; 5-9 -veined. Lemma margins flat. Lemma apex acute.
    Flowers
    Lodicules absent. Anthers 3.
    Distribution
    Africa: northeast tropical. Asia-temperate: Arabia.
    Reference
    Paniceae. TAC 1997.

    Distribution

    Native to:

    Eritrea, Saudi Arabia, Yemen

    Cenchrus yemensis (Deflers) ined. appears in other Kew resources:

    Literature

    Kew Backbone Distributions
    • Cope, T.A., Knees, S.G. & Miller, A.G. (2007). Flora of the Arabian peninsula and Socotra 5(1): 1-387. Edinburgh University Press.
    • 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.

    Sources

    GrassBase - The Online World Grass Flora
    http://creativecommons.org/licenses/by-nc-sa/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