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This species is accepted, and its native range is Coastal Somalia to E. Kenya.

[FSOM]

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

Type
S3, “Chisimaio”, Gorini 97 (FT lecto.)
Morphology General Habit
Perennial with a long creeping branched stolon to 1 m or more long with shorter lateral sterile shoots from the nodes (these are frequently crowded at the tip of the stolon), and fertile terminal shoots
Morphology Leaves
Leaves 0.5–8 cm long and 0.5–1.5 mm wide, subterete with scabrid margin and frequently with a prominent transverse impression below the apex; leaf-sheaths grey, translucent, but with darker reddish brown nerves, the old sheaths darker and splitting up into fibres
Morphology Reproductive morphology Inflorescences
Inflorescence a solitary head or spikelet-cluster on a 1–8 cm long stem, consisting of 2–10 rather flattened reddish brown spikelets 4–10 x 3–4 mm
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes 3–4 mm long, reddish brown with a paler margin
Morphology Reproductive morphology Flowers Gynoecium Style
Style 3-branched.
Distribution
C1; S2, 3; Kenya
Ecology
Near sea-level to c. 50 m.

[FTEA]

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

Type
Type: Somalia, Sultanate of Obbia, between Obbia and Wuarandi, Robecchi 107 (CSET!, syn.); between Obbia and Magangib, Puccioni & Stefaninin 371! (CSET!, syn.); near Obbia, Puccioni & Stefanini 389 (CSET!, syn.); Kisimayo, Gorini 97 (CSET!, syn.); Mogadishu, Senni 619 (??, syn.); Kenya, Lamu District: Kiunga, Riva 1724b (CSET!, syn.)
Morphology General Habit
Perennial, with a long creeping rhizome up to 5 m long, 1–4 mm in diameter, from the nodes of this stolon arise shorter lateral sterile shoots and fertile terminal shoots, up to 26 cm high
Morphology Leaves
Leaf blade linear, subterete, 1–11 cm long, 1.6–3 mm wide, scabrid margin and a prominent impression below the apex, apex obtuse Leaf sheath grey, translucent, 0.5–2.5 cm long. Leaves crowded on lateral and terminal shoots, stiff, up to 13 cm long.
Morphology Reproductive morphology Inflorescences Bracts
Involucral bracts leaf-like, erect to spreading, 2, lowermost almost erect, 1.5–2 cm long, 1–2 mm wide
Morphology Reproductive morphology Inflorescences
Inflorescence capitate.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets 2–10 per head, ovoid, 6.3–9.6 mm long, 3.3–4.6(–6.5) mm wide, rachilla straight.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes reddish brown with pale margin, ovate, 3.3–5.2 mm long, 1.8–2.5 mm wide, keel flattish, 3–5-veined, apex rounded to acuminate
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 3.
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Filaments 3.3–4.2 mm long.
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anthers 1.4–2.1 mm long
Morphology Reproductive morphology Fruits
Nutlet dark greyish to brownish-black, ellipsoid-lanceolate, 1.8–2.1 mm long, 0.8–1 mm wide, smooth to minutely papillose in longitudinal rows.
Ecology
On sand dunes; sea-level
Conservation
Restricted distribution and habitat, but without any specific threats
Note
Easy to recognize due to its long wiry stolons and shoots coming off these, and its crowded stiff leaves.
Distribution
Flora districts: K7 Range: Somalia

Native to:

Kenya, Somalia

Cyperus chordorrhizus Chiov. appears in other Kew resources:

First published in Agric. Colon. 20: 105 (1926)

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 Somalia

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

Flora of Tropical East Africa

  • Agric. Colon. 20: 105 (1926)
  • Flora of Somalia 4: 126 (1995).
  • Haines & Lye, Sedges & Rushes E. Afr.: 263, fig. 535 (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

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