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This species is accepted, and its native range is Ethiopia to N. Tanzania.
A specimen from Kew's Herbarium

[FSOM]

M. Thulin et al. Flora of Somalia, Vol. 1-4 [updated 2008] https://plants.jstor.org/collection/FLOS

Morphology General Habit
Fairly robust perennial with long slender stolons and a 7–10 mm thick bulb
Morphology Stem
Stems 10–60 cm long and 1–3 mm thick, triangular, growing directly from the bulb
Morphology Leaves
Leaves many from the base, the largest 15–30 cm long and 2.5 mm wide; leaf-sheaths rather wide and fleshy, brown
Morphology Reproductive morphology Inflorescences
Inflorescence a congested anthela of few–many crowded spikes, 2–4 cm in diam., more rarely with 1–4 additional stalked spikes; inflorescence-bracts 4–8, leafy, spreading or reflexed, the largest 8–20 cm long
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets 5–20 x 1.5–3 mm, lanceolate, golden yellow to yellowish brown, 8–15-flowered
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes 3.8–5 mm long, ovate-lanceolate, yellowish brown to medium reddish brown with a green excurrent midrib (in the uppermost glumes the mucro is at least 0.5 mm long and recurved) and 3–5 prominent lateral nerves on each side of the midrib
Morphology Reproductive morphology Flowers Gynoecium Style
Style 3-branched.
Distribution
N2, 3; S1, 2 also in East Africa.
Ecology
Near sea-level to 1250 m.

[FTEA]

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

Type
Type: Kenya, Teita District: Taita Hills, Ndi Mountains, Scott-Elliot 6284 (K!, holo.)
Morphology General Habit
Perennial up to 60 cm tall, slender to somewhat robust, with 7–10 mm thick black bulbs.
Morphology Culms
Culms growing directly from the bulb, 15–56 cm long, 1–2.4 mm wide, trigonous with longitudinal grooves, smooth
Morphology Leaves
Leaf blade linear, folded when dried, 19–32 cm long, 1.9–4 mm wide, glabrous to somewhat scabrid on the margins, apex acuminate Leaf sheath pale brownish-green, 1.5–10 cm long, rather wide and somewhat fleshy. Leaves many from the base, up to 42 cm long.
Morphology Reproductive morphology Inflorescences Bracts
Involucral bracts leaf-like, spreading, 3–6, lowermost 10–19 cm long, 1.6–3.8 mm wide
Morphology Reproductive morphology Inflorescences
Inflorescence (loosely) capitate, very occasionally simple, then primary branches 0–3, 0–4 cm long.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets in loose digitate clusters, many per cluster, lanceolate, 8–20 mm long, 1.4–4 mm wide.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes golden to yellowish-brown, sometimes with a slight reddish-brown tinge, ovatelanceolate, glabrous, 3.7–6.4 mm long, 1.5–2.1 mm wide, keel green, excurrent, with several veins on either side, apex acuminate
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 3.
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Filaments 2.5–5.7(–6.4) mm long.
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anthers 1.8–2.8 mm long
Morphology Reproductive morphology Fruits
Nutlet grey, obovoid, trigonous, 1.7–1.8 mm long, 0.8–0.9 mm wide, minutely papillose.
Ecology
In seasonally wet habitats, wooded grassland and grasslands, often on red loamy soil; 450–1250 m
Conservation
Probably least concern (LC)
Distribution
Flora districts: K1 K4 K7 T2 Range: Ethiopia, Somalia

Native to:

Ethiopia, Kenya, Somalia, Tanzania

Cyperus grandibulbosus C.B.Clarke appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Oct 29, 1898 Scott Elliot, G.F. [6284], Tanzania K000321417 holotype

First published in D.Oliver & auct. suc. (eds.), Fl. Trop. Afr. 8: 353 (1901)

Accepted by

  • Edwards, S., Demissew, S., & Hedberg, I. (eds.) (1997). Flora of Ethiopia and Eritrea 6: i-xxviii, 1-586. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.
  • 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 Somalia

  • Flora Somalia, Vol 4, (1995) Author: by K. A. Lye [updated by M. Thulin 2008]

Flora of Tropical East Africa

  • E.P. 4, 20 (101): 125 (1936)
  • F.T.A. 8: 353 (1902)
  • Fl. Eth. 6: 451, fig. 212.92 (1997).
  • Fl. Somalia 4: 124 (1995)
  • Haines & Lye, Sedges & Rushes E. Afr.: 193, fig. 378 (1983)

Flora of Somalia
Flora of Somalia
http://creativecommons.org/licenses/by-nc-sa/3.0

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