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  1. Family: Poaceae Barnhart
    1. Genus: Urochloa P.Beauv.
      1. Urochloa rudis Stapf

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

    [FTEA]

    Gramineae, W. D. Clayton, S. M. Phillips & S. A. Renvoize. Flora of Tropical East Africa. 1974

    Habit
    Creeping annual, rooting from the lower nodes; culms 20–100 cm. high.
    Leaves
    Leaf-blades broadly linear to narrowly lanceolate, 2–15 cm. long, 6–20 mm. wide, pubescent to velvety tomentose.
    Inflorescences
    Inflorescence of 2–5 racemes on a common axis 2–6 cm. long; racemes 2–6 cm. long, bearing single spikelets on a narrowly winged glabrous rhachis (but the pedicels with a few bristles).
    Spikelets
    Spikelets broadly elliptic, plumply plano-convex, 3.5–5 mm. long, cuspidate; lower glume cuff-like, up to 1/4 the length of the spikelet, truncate, upper glume conspicuously 11-nerved, firmly membranous, tuberculate, the tubercles often bearing spines or bristles; lower lemma 7-nerved, chartaceous, tuberculate; lower palea with hyaline centre (1/3–1/2 the width) flanked by wide coriaceous strips along the keels; upper lemma not much shorter than the lower, submuricate, with a mucro 0.5 mm. long.
    Habitat
    Coastal bushland; 0–30 m.
    Distribution
    K7 T3 T6 Z
    [GB]
    Habit
    Annual. Culms decumbent; 20-100 cm long; rooting from lower nodes. Ligule a fringe of hairs. Leaf-blades linear, or lanceolate; 2-15 cm long; 6-20 mm wide. Leaf-blade surface pubescent; moderately hairy, or densely hairy.
    Inflorescences
    Inflorescence composed of racemes. Racemes 2-5; borne along a central axis; unilateral; 2-6 cm long. Central inflorescence axis 2-6 cm long. Rhachis narrowly winged; angular; glabrous on margins. Spikelet packing abaxial; regular; 2 -rowed. Spikelets solitary. Fertile spikelets pedicelled. Pedicels bearing a few hairs.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; compressed moderately; plano-convex; cuspidate; 3.5-5 mm long; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; compressed moderately; plano-convex; cuspidate; 3.5-5 mm long; falling entire.
    Glume
    Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume oblate; clasping; 0.1-0.25 length of spikelet; hyaline; without keels; 0-3 -veined. Lower glume apex truncate. Upper glume elliptic; 1 length of spikelet; membranous; without keels; 11 -veined. Upper glume surface tuberculate; glabrous, or setose; with tubercle-based hairs. Upper glume apex cuspidate.
    Florets
    Basal sterile florets barren; with palea. Lemma of lower sterile floret similar to upper glume; elliptic; 1 length of spikelet; chartaceous; 7 -veined; tuberculate; cuspidate. Palea of lower sterile floret becoming indurate on keels at maturity. Fertile lemma elliptic; dorsally compressed; 3 mm long; indurate; without keel; 7 -veined. Lemma surface reticulate. Lemma margins involute. Lemma apex obtuse; mucronate. Principal lemma awn 0.5 mm long overall. Palea indurate.
    Distribution
    Africa: northeast tropical and east tropical.
    Reference
    Paniceae. FTEA.

    Images

    Distribution

    Native to:

    Kenya, Somalia, Tanzania

    Synonyms

    Other Data

    Urochloa rudis Stapf appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jul 1, 1988 Drake-Brockman, R.E. [954], Somalia K000281984 holotype
    Gorin, P., Somalia K000281985
    Marshall, I.H. [41], Tanzania K000281992

    Bibliography

    First published in D.Oliver & auct. suc. (eds.), Fl. Trop. Afr. 9: 597 (1920)

    Accepted by

    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Thulin, M. (ed.) (1995). Flora of Somalia 4: i-ii, 1-298. The Royal Botanic Gardens, Kew.
    • Clayton, W.D. & Renvoize, S.A. (1982). Gramineae Flora of Tropical East Africa 3: 451-898.

    Literature

    Kew Backbone Distributions

    • Clayton, W.D. & Renvoize, S.A. (1982). Gramineae Flora of Tropical East Africa 3: 451-898.

    Flora of Tropical East Africa

    • Stapf in Flora of Tropical Africa 9: 597 (1920).

    Sources

    Flora of Tropical East Africa
    Flora of Tropical East 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 2020. 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 2020. 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