1. Family: Cyperaceae Juss.
    1. Genus: Isolepis R.Br.
      1. Isolepis costata Hochst. ex A.Rich.

        This species is accepted, and its native range is Ethiopia to S. Africa, Madagascar.

    [FTEA]

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

    Type
    Type: Ethiopia, Ethiopia, Ouodgerate, Petit s.n. (P, syn.) & without locality, Schimper II–1153 (P, syn.; BM, BR, K, UPS, isosyn.)
    Habit
    Tufted annual or short-lived perennial.
    Rhizomes
    Rhizome 1–22 × 0.7–2 mm, ascending, whitish.
    Culms
    Culms 7–81 cm tall, 0.3–1.3 mm diameter, without nodes
    Leaves
    Leaves with brown sheath 8–101 × 0.5–1.8 mm; blade 1–9 × 0.1–0.8 mm
    Inflorescences
    Inflorescence pseudolateral, proliferating.
    Bracts
    Bract 2–7 × 0.2–0.6 mm.
    Spikelets
    Spikelets 1–25, 1.4–5.5 × 0.7–2.1 mm, with 4–31 glumes.
    Glume
    Glumes brown to dark brown, 1–2.1 × 0.4–0.9 mm, acute to obtuse, midrib green to partially brown with mucro < 0.1 mm long
    Stamens
    Stamens 1–3.
    Anthers
    Anthers 0.3–1 mm long, crested
    Style
    Style bifid or trifid
    Fruits
    Nutlets golden brown, 0.7–1.3 × 0.4–0.8 mm, surface with longitudinal ribs and densely set transverse bars connecting the ribs.
    Ecology
    Seepage areas, stream banks, montane forests; 1700–3500 m
    Distribution
    Range: Widespread in tropical Africa; Madagascar Flora districts: U2 U3 K2 K3 K4 T2 T3 T6 T7 T8

    Images

    Distribution

    Native to:

    Botswana, Burundi, Cape Provinces, Ethiopia, Free State, Kenya, KwaZulu-Natal, Lesotho, Madagascar, Malawi, Namibia, Northern Provinces, Rwanda, Sudan, Swaziland, Tanzania, Uganda, Zambia, Zaïre, Zimbabwe

    Isolepis costata Hochst. ex A.Rich. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Schimper [1153], Ethiopia K000416532
    Schimper [1153], Ethiopia K000416533
    Baron, R. [2043], Madagascar K000416541 Unknown type material
    Gunn, R.C. [420], Tasmania K000881869 lectotype
    Gunn, R.C. [s.n.], Tasmania K000881870
    Gunn, R.C. [s.n.], Tasmania K000881871
    Mueller, F J.H.von [s.n.], Victoria K000881872
    Hildebrandt, J.M. [3738], Madagascar Isolepis costata var. macra K000416539 Unknown type material

    First published in Tent. Fl. Abyss. 2: 499 (1850)

    Accepted by

    • Darbyshire, I., Kordofani, M., Farag, I., Candiga, R. & Pickering, H. (eds.) (2015). The Plants of Sudan and South Sudan: 1-400. Kew publishing, Royal Botanic Gardens, Kew.
    • 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.
    • Govaerts, R. (2004). World Checklist of Monocotyledons Database in ACCESS: 1-54382. The Board of Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Flora of Tropical East Africa
    • K.B. 57: 316 (2002)
    • Fl. Eth. 6: 423, fig. 212.53 (1997).
    • Sedges & Rushes E. Afr.: 135 (1983)
    • Tent. Fl. Abyss. 2: 499 (1851)

    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 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