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  1. Family: Cyperaceae Juss.
    1. Genus: Rhynchospora Vahl
      1. Rhynchospora angolensis Turrill

        This species is accepted, and its native range is Tropical Africa, Madagascar.

    [FTEA]

    Cyperaceae, K Hoenselaar, B. Verdcourt & H. Beentje. Hypolytrum, D Simpson. Fuirena, M Muasya. Flora of Tropical East Africa. 2010

    Type
    Type: Angola, Benguella, country of the Ganguellas and Ambuellas, Gossweiler 3268 (K!, holo. & iso.)
    Habit
    Leafy, up to 105 cm high, with a short rhizome. Perennial, slender.
    Culms
    Culms many, crowded, rounded with longitudinal ridges, 24–90 cm long, 0.5–0.9 mm wide, glabrous, their bases covered with scales and old leaf bases split by the new shoots and some desintegrating into fibres
    Leaves
    Leaf sheath brown, 2.5–7.5 cm long. Leaves up to 40 cm. Leaves subtending the primary branches. Leaf blade linear, stiff, erect, flat or triangular, 22–34 cm long, 0.6–1.8 mm wide, glabrous, the margins and apex sometimes scabrid, apex acuminate
    Inflorescences
    Inflorescence a slender panicle, 13–28 cm long, with main branches protruding from the upper leaf sheaths and ending in a few usually stalked and solitary spikelets.
    Leaf sheaths
    Sheath 1.5–3.2 cm long, blade 1.5–5 cm long, 0.6–1 mm wide.
    Spikelets
    Spikelets ovoid, acute, 5–8(–12) mm long, 1.8–3.5(–5) mm wide.
    Glume
    Glumes orange-brown to brown, the lower 3–4 glumes sterile, upper 3–8 glumes frequently bisexual and producing nutlets, (broadly) ovate, 3–4.4 mm long, 2.5–3.8 mm wide, glabrous, keel protruding into an awned apex
    Perianth
    Perianth of 6 equal bristles, 3–3.5 mm long
    Stamens
    Stamens 2: filaments 2.1–4.5 mm long, becoming stiff and bristle-like in fruit.
    Anthers
    Anthers ± 1.3 mm long
    Style
    Style with 2 long branches
    Fruits
    Nutlet orange-brown to brown, ellipsoid, the adaxial side flattened, 1.7–3.1 mm long (including the 0.2–0.5 mm long pedicel), 1.2–1.9 mm wide, faintly transversely wavy, with many transparent hairs at its base, crown on top of the nutlet flattened-conical, 0.7–1.2 mm long, whitish.
    Ecology
    Swampy and boggy grassland; 450–1150 m
    Conservation
    Least Concern (LC) due to its wide distribution and common habit.
    Note
    " R. angolensis is closely related to R. brownii, but it is easily distinguished by its glabrous, rounded culms, larger spikelets and longer perianth bristles.
    Distribution
    Range: Cameroon, Central African Republic, Congo-Kinshasa, Angola, Zambia, Mozambique Flora districts: U4 T1 T8

    Images

    Distribution

    Native to:

    Angola, Benin, Cameroon, Central African Repu, Madagascar, Mozambique, Tanzania, Uganda, Zambia, Zaïre

    Synonyms

    Other Data

    Rhynchospora angolensis Turrill appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Gossweiler, J. [3268], Angola K000244817 holotype
    Gossweiler, J. [3268], Angola K000244818 isotype

    Bibliography

    First published in Bull. Misc. Inform. Kew 1914: 136 (1914)

    Accepted by

    • Hoenselaar, K., Verdcourt, B. & Beentje, H. (2010). Cyperaceae Flora of Tropical East Africa: 1-466.
    • Govaerts, R. & Simpson, D.A. (2007). World Checklist of Cyperaceae. Sedges: 1-765. The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Akoègninou, A., van der Burg, W.J. & van der Maesen, L.J.G. (eds.) (2006). Flore Analytique du Bénin: 1-1034. Backhuys Publishers.
    • Govaerts, R. (2004). World Checklist of Monocotyledons Database in ACCESS: 1-54382. The Board of Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions

    • Hoenselaar, K., Verdcourt, B. & Beentje, H. (2010). Cyperaceae Flora of Tropical East Africa: 1-466.
    • Akoègninou, A., van der Burg, W.J. & van der Maesen, L.J.G. (eds.) (2006). Flore Analytique du Bénin: 1-1034. Backhuys Publishers.

    Flora of Tropical East Africa

    • Haines & Lye, Sedges & Rushes E. Afr.: 318 (1983).
    • K.B. 1914 (3): 136 (1914)

    Sources

    Flora of Tropical East Africa
    Flora of Tropical East Africa
    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