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  1. Family: Poaceae Barnhart
    1. Genus: Urochloa P.Beauv.
      1. Urochloa platyrrhachis C.E.Hubb.

        This species is accepted, and its native range is S. DR Congo to Zambia.

    [GB]
    Habit
    Annual. Culms decumbent; 20-60 cm long; rooting from lower nodes. Ligule a fringe of hairs. Leaf-blades linear, or lanceolate; 2-10 cm long; 3-12 mm wide.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1-3; single, or paired, or digitate; unilateral; 1-5 cm long. Central inflorescence axis 0-1 cm long. Rhachis broadly winged; foliaceous; with sharp-edged midrib; 2-5 mm wide. Spikelet packing abaxial; regular; 2 -rowed. Spikelets appressed; solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; compressed strongly; plano-convex; subacute; 3.5-4 mm long; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; compressed strongly; plano-convex; subacute; 3.5-4 mm long; falling entire.
    Glume
    Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume oblate; 0.2-0.5 mm long; 0.05-0.1 length of spikelet; membranous; without keels; 3 -veined. Lower glume apex truncate, or obtuse. Upper glume ovate; 1 length of spikelet; membranous; without keels; 7 -veined. Upper glume apex obtuse.
    Florets
    Basal sterile florets barren; with palea. Lemma of lower sterile floret ovate; 1 length of spikelet; membranous; thinner along midline; 5 -veined; sulcate; acute. Palea of lower sterile floret becoming indurate on flanks at maturity. Fertile lemma orbicular; dorsally compressed; 2.5-3 mm long; indurate; without keel. Lemma surface granulose. Lemma margins involute. Lemma apex obtuse; mucronate. Palea indurate.
    Distribution
    Africa: west-central tropical and southern tropical.
    Reference
    Paniceae. FZ.
    [FZ]

    Gramineae, W. D. Clayton. Flora Zambesiaca 10:3. 1989

    Habit
    Annual.
    Culms
    Culms 20–60 cm. high, ascending.
    Inflorescences
    Inflorescence of 1–3 racemes, these 1–5 cm. long, bearing the spikelets singly on a foliaceous rhachis 2–5 mm. wide and terminating in a spikelet.
    Spikelets
    Spikelets 3.5–4 mm. long, broadly elliptic, glabrous.
    Glume
    Inferior glume less than 0.5 mm long, broadly obtuse to truncate.
    Inferior
    Inferior glume less than 0.5 mm long, broadly obtuse to truncate. Inferior lemma with a hyaline groove down the midline.
    Lemma
    Superior lemma granulose, mucronulate, shorter than spikelet. Inferior lemma with a hyaline groove down the midline.
    Superior
    Superior lemma granulose, mucronulate, shorter than spikelet.

    Images

    Distribution

    Native to:

    Zambia, Zaïre

    Other Data

    Urochloa platyrrhachis C.E.Hubb. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jul 1, 1988 Mundy, H.G. [5038], Zaïre K000281978 holotype

    Bibliography

    First published in Bull. Misc. Inform. Kew 1934: 112 (1934)

    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.
    • Clayton, W.D. (1989). Flora Zambesiaca 10(3): 1-231. Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions

    • Clayton, W.D. (1989). Flora Zambesiaca 10(3): 1-231. Royal Botanic Gardens, Kew.

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    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