1. Family: Cyperaceae Juss.
    1. Genus: Carex L.
      1. Carex erythrorrhiza Boeckeler

        This species is accepted, and its native range is Ethiopia to E. DR Congo and N. Tanzania.

    [FTEA]

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

    Type
    Type: Ethiopia, Simien, Mt Bachit, near Demerki and Debreski, Schimper 170, 170B (B†, holo.; K!, syn.)
    Habit
    Perennial herb forming dense tussocks to over 1.5 m.
    Rhizomes
    Rhizome not or shortly creeping.
    Roots
    Roots and rootlets usually bright brownish red; according to fieldnotes attached to Kirk in Bally 9887 and Burtt 4361 the plant can form pillars to 1.5 m tall with an apical diameter of 45–60 cm and with a great tuft of culms and leaves at the apex (see photo, p429)
    Leaves
    Leaves very slender, ± 60 cm long, 1–3 mm wide or rarely to 5 mm with scabrid margins
    Inflorescences
    Inflorescence a narrow dense panicle 4–7 cm long, 6–12 mm wide; lowest subtending bracts with blades 2.5–2.2 cm long.
    Spikelets
    Spikelets up to 12 mm long and 5–8 mm wide.
    Glume
    Glumes light to dark brown, 3–4 mm long with midrib produced
    Fruits
    Utricles pale to dark brown, not projecting beyond the glumes, lanceolate-ovoid, 1.5–4 mm long including a smooth 1–1.5 mm long smooth beak with or without 3–5 distinct longitudinal ribs
    Ecology
    On rocks, stream banks, heath zone; 2400–3500 m
    Note
    The status of many specimens is dubious, there being no rootstocks nor field observations. The well attested pillar-like habit does not appear to have been recorded for Ethiopia and may not always occur, the habit then being much like C. conferta. There is scope for much fieldwork here. Raynal suggests the tussocks can be up to 1.5 m wide.
    Distribution
    Flora districts: U3 K3 T2 Range: Ethiopia, E Congo-Kinshasa

    Images

    Distribution

    Native to:

    Ethiopia, Kenya, Tanzania, Uganda, Zaïre

    Carex erythrorrhiza Boeckeler appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Feb 15, 1899 Schimper [170], Ethiopia K000363471
    Feb 15, 1899 Schimper [170], Ethiopia K000363470
    Feb 15, 1899 Schimper [170B], Ethiopia K000363469
    Feb 14, 1899 Schimper [170a], Ethiopia K000363468
    Schimper, W. [170], Ethiopia K000794989 isosyntype
    Schimper, W. [170], Ethiopia K000794990 isosyntype

    First published in Linnaea 39: 103 (1875)

    Accepted by

    • 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.
    • 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
    • Hoenselaar, K., Verdcourt, B. & Beentje, H. (2010). Cyperaceae Flora of Tropical East Africa: 1-466.
    Flora of Tropical East Africa
    • Fl. Eth. 6: 504, fig. 212.176 & 212.185.7 (1997).
    • Haines & Lye, Sedges & Rushes E. Afr.: 373, fig. 770 (1983)
    • E.P. 4, 20 (Cyp.-Car.): 173 (1908)
    • F.T.A. 8: 517 (1902)
    • Linnaea 39: 103 (1875)

    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