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This species is accepted, and its native range is SE. Kenya.
A specimen from Kew's Herbarium

[FTEA]

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

Type
Type: Kenya: Kwale District: near Taru between Samburu and Mackinnon Road, Drummond & Hemsley 4204 (BR, holo.; EA, K!, iso., Aluka!)
Morphology General Habit
Perennial, robust, tussocky, with a short woody rhizome.
Morphology Culms
Culms tufted, 35–50 cm long, 1.5–2.5 mm wide, trigonous, glabrous
Morphology Leaves
Leaves many from the base, with leaf sheath pale reddish brown; blade linear, channelled, stiff, 20–40 cm long, 1–5 mm wide, scabrid on margin
Morphology Reproductive morphology Inflorescences Bracts
Involucral bracts leaf-like, spreading, 3–5, lowermost 20–35 cm long
Morphology Reproductive morphology Inflorescences
Inflorescence a simple to compound anthela 8–15 cm in diameter, with 1–2 (sub-)sessile spikes and 5–7 stalked spikes on stalks 2–12 cm long and consisting of 12–22 spikelets.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets in loose clusters, at the end of primary and secondary branches, linear, rather turgid, 10–25 mm long, 1.5–2 mm wide, rachis straight.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes reddish-brown, margin ± uncoloured, ovate, 3–3.5 mm long, keel green, with 4–6 obscure veins on each side, apex acute
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 3
Morphology Reproductive morphology Flowers Gynoecium Style
Style 3-branched
Morphology Reproductive morphology Fruits
Nutlet ellipsoid, trigonous, ± 1.4 mm long, ± 0.6 mm wide, apiculate, minutely papillose.
Ecology
On shallow sandy soil over outcropping rocks; ± 360 m
Conservation
Needs information on current status of habitat.
Note
Similar to C. rotundus, but not producing stolons, and larger and tussocky; also the spikelets are slightly longer.
Distribution
Flora districts: K7 Flora districts: Known only from the type

Native to:

Kenya

Cyperus kwaleensis Lye appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Drummond [4204], Kenya K000743735 isotype
Drummond [4204], Kenya K000743734 isotype

First published in Nordic J. Bot. 3: 221 (1983)

Accepted by

  • 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.
  • Hoenselaar, K., Verdcourt, B. & Beentje, H. (2010). Cyperaceae Flora of Tropical East Africa: 1-466.

Literature

Flora of Tropical East Africa

  • Haines & Lye, Sedges & Rushes E. Afr.: 186, fig. 361 (1983).
  • Nordic Journ. Bot. 3: 221 (1983)

Flora of Tropical East Africa
Flora of Tropical East Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Herbarium Catalogue Specimens
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 2021. 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 2021. 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