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This species is accepted, and its native range is W. Tropical Africa to N. 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

Morphology General Habit
Perennial up to 135 cm tall, tussocky, with a minute root system.
Morphology Culms
Culms tufted, 10–130 cm long, 2–5 mm wide at the base, ± 1 mm wide below the inflorescence, trigonous, glabrous
Morphology Leaves
Leaves up to 39 cm long. Leaf blade linear, flat, 3–30 cm long, 1.5–3.5 mm wide, scabrid on at least margin near the apex, apex acuminate Leaf sheath whitish or pale purplish, very thin, 3.5–9 cm long.
Morphology Reproductive morphology Inflorescences Bracts
Involucral bracts leaf-like, erect to spreading, 6–7, lowermost 5–20 cm long, 1–2.2 mm wide
Morphology Reproductive morphology Inflorescences
Inflorescence a simple anthela, primary branches 1–5, 0.5–1.5 cm long.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets in crowded spikes, ± 12 mm long, 7 mm wide, sessile and at the end of primary branches, 10–30 per spike, ovoid, 4–6.3 mm long, 1.5–2.2 mm wide, hardly compressed, falling off entirely when matured.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes greyish, ovate, 2–2.8 mm long, 1.6–1.8 mm wide, keel excurrent, with 3–6 prominent veins on each side, apex a shortly recurved mucro
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 3.
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Filaments ± 2.7 mm long.
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anthers 0.8–1 mm long
Morphology Reproductive morphology Fruits
Nutlet reddish-brown, obovoid, triquetrous, 1.3–1.6 mm long, 1–1.3 mm wide, minute papillate, the nutlet often strongly enwrapped in its glume.

[FWTA]

Cyperaceae, Miss S. S. Hooper. Flora of West Tropical Africa 3:2. 1972

Morphology General Habit
Small leafy weed
Morphology Reproductive morphology Inflorescences
Often with a single echinate head of turgid spikelets
Ecology
Disturbed ground.

Native to:

Benin, Ethiopia, Gabon, Ghana, Ivory Coast, Kenya, Nigeria, Senegal, Togo

Cyperus soyauxii Boeckeler appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Soyaux, H. [325(b)], Gabon K000321335 Unknown type material

First published in Bot. Jahrb. Syst. 5: 501 (1884)

Accepted by

  • Akoègninou, A., van der Burg, W.J. & van der Maesen, L.J.G. (eds.) (2006). Flore Analytique du Bénin: 1-1034. Backhuys Publishers.
  • 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.
  • Lye, K.A. & Thery, P. (2012). Flore du Gabon 44: 1-230. Muséum National D'Histoire Naturelle, Paris.

Literature

Kew Backbone Distributions

  • Akoègninou, A., van der Burg, W.J. & van der Maesen, L.J.G. (eds.) (2006). Flore Analytique du Bénin: 1-1034. Backhuys Publishers.
  • Hedberg, I., Friis, I. & Persson, E. (2009). Flora of Ethiopia and Eritrea 1: 1-305. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.
  • Sosef, M.S.M. & al. (2006). Check-list des plantes vasculaires du Gabon Scripta Botanica Belgica 35: 1-438.

Flora of Tropical East Africa

  • E.J. 5: 501 (1884)

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

Flora of West Tropical Africa
Flora of West Tropical 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