1. Family: Cyperaceae Juss.
    1. Genus: Carex L.
      1. Carex elgonensis Nelmes

        This species is accepted, and its native range is E. Tropical Africa (Mt. Elgon).

    [FTEA]

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

    Type
    Type: Kenya, Mt Elgon, G. Taylor 3474 (BM!, holo.; K!, fragment)
    Habit
    Rather slender perennial forming small tussocks 0.4–1.2 m tall with a creeping rhizome
    Leaves
    Leaf blades up to 50 cm long, 3–6 mm wide, flat or plicate with scabrid margins Leaf sheaths brown to purple.
    Inflorescences
    Spike 1.5–4.5 cm long, 3–10 mm wide, the terminal one entirely male or with a few female spikelets at the base, the lower ones female Inflorescences of 4–6 erect or pendulous very dark blackish brown spikes arising singly from the leaf sheaths, the upper part ± sessile, the lower with peduncles 3–5 cm long.
    Glume
    Glumes dark blackish or reddish brown often with a very narrow obscure yellow keel but frequently entirely black, ovate-lanceolate, 5–7 mm long usually with excurrent midrib
    Fruits
    Utricle green turning brown or blackish and sometimes with dense dark purple speckling at maturity, (3.5–)4–6(–7) mm long including (0.7–)1–2 mm long beak, scabrid at the margins and strongly divaricate-toothed.
    Ecology
    Afro-alpine swamps and riversides in Hagenia-Hypericum and heath zones, margins of bamboo forest; 2400–3650 m
    Note
    Haines & Lye state perhaps not specifically distinct from C. mildbraediana and Nelmes compared his species with this, but the distinctly divaricately toothed utricle beak is different from that of C. mildbraediana, a few utricles from the type of which are preserved at Kew. In T 7 there are specimens which could be referred to C. petitiana or C. elgonensis, varying in spike colour. Some of these e.g. Wingfield 530, Kitulo Plateau, just left of Igoma–Kitulo road 1 km beyond Kikondo, 31 Dec. 1969, have the glumes spreading much longer than the utricle (4.5–8 mm) more obvious than in the Kenya material.
    Distribution
    Range: Not known elsewhere Flora districts: U2 K3 K4 T 7 (see note)

    Images

    Distribution

    Native to:

    Kenya, Uganda

    Carex elgonensis Nelmes appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Feb 6, 2006 Smith, A. [61], Kenya K000333755
    Dec 7, 2005 Fries, R.E. [2533], Kenya K000363576 isotype
    Dec 7, 2005 Fries, R.E. [1228], Kenya K000363577 isosyntype
    Nov 30, 2005 Smith, A.R. [212], Kenya K000333749
    Dec 2, 2002 Bogdan, A. [4996], Kenya K000333752
    Jan 1, 1951 Hedberg, O. [1600], Kenya K000333754
    Hepper, F.N. [4962], Kenya K000333762
    Adamson, J. [493], Kenya K000333750
    Bogdan, A. [5409], Kenya K000333763
    Taylor, G. [3474], Kenya K000363578
    Verdcourt, B. [2005], Kenya K000333756
    Haines, R.W. [4317], Kenya K000333753
    Zinderen [955], Kenya K000333748
    Haines, W. [4157], Kenya K000333764

    First published in Bull. Misc. Inform. Kew 1938: 245 (1938)

    Accepted by

    • Escudero, M. & Luceño, M. (2011). Taxonomic revision of the tropical African group of Carex subsect. Elatae (sect. Spirostachyae, Cyperaceae) Anales del Jardin Botanico de Madrid 68: 225-247.
    • 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. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.

    Literature

    Kew Backbone Distributions
    • Gehrke, B. (2011). Synopsis of Carex (Cyperaceae) from sub-Saharan Africa and Madagascar Botanical Journal of the Linnean Society 166: 51-99.
    • Hoenselaar, K., Verdcourt, B. & Beentje, H. (2010). Cyperaceae Flora of Tropical East Africa: 1-466.
    Flora of Tropical East Africa
    • Haines & Lye, Sedges & Rushes of E. Afr.: 381, fig. 786 (1983).
    • Journ. E. Afr. Nat. Hist. Soc. 24 (106): 11, figs. 38, 39 (1963)
    • A.V.P.: 59 (1957)
    • K.B. 1938: 245 (1938)

    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