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This species is accepted, and its native range is Africa.
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
Robust tussocky perennial with a thick branched rhizome and long stolons
Morphology Stem
Stems 1–35 cm long and 2–5 mm thick, triangular to almost rounded
Morphology Leaves
Leaves many, 10–40 cm long and 3–8 mm wide, flat or folded, rather stiff, scabrid on margin; sheaths green to light reddish brown
Morphology Reproductive morphology Inflorescences
Anthela 4–8 cm in diam., consisting of numerous almost sessile digitate spikelet-clusters, or sometimes the spikelet-clusters on 0.5–2.5 cm long peduncles; each spikelet-cluster with 6–15 spikelets Inflorescence a large globose head or sometimes a more open anthela surrounded by 4–8 long leafy bracts; major involucral bract 10–25 cm long and 4–6 mm wide, strongly scabrid on margin, spreading or reflexed
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets 14–20 x 3–5 mm, linear-lanceolate, pale brown to almost whitish, 10–20-flowered, only slightly compressed
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes 6–8 mm long, broadly ovate, concave, light reddish brown with paler margin and numerous narrow nerves; midrib thickened above and slightly excurrent or ending in apex
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 3
Morphology Reproductive morphology Flowers Gynoecium Style
Style with 3 long branches
Morphology Reproductive morphology Fruits
Nutlet 2–2.3 x 1–1.2 mm, obovate, dark brown, minutely papillose.
Distribution
C1; S2, 3 along most tropical African coasts.
Ecology
Sea-level to 280 m.
Vernacular
Daleen (Somali).

[FTEA]

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

Type
Type: Guinea, Isert s.n. (C, holo.)
Morphology General Habit
Perennial, robust and tussocky, up to 70 cm tall, with a thick branched rhizome 3–5 mm in diameter and long stolons.
Morphology Culms
Culms few, 15–62 cm long, 1.6–4.3 mm wide, trigonous to almost terete, glabrous
Morphology Leaves
Leaves up to 85 cm long. Leaf blade linear, flat or folded, rather thick, 25–80 cm long, 3–13 mm wide, apex acute to acuminate, scabrid on margin Leaf sheath green to reddish-brown, at the base almost black, 4.5–10 cm long.
Morphology Reproductive morphology Inflorescences Bracts
Involucral bracts leaf-like, spreading to reflexed, (2–)4–8, lowermost 15–38 cm long, 4–8 mm wide
Morphology Reproductive morphology Inflorescences
Inflorescence almost capitate to a simple anthela, primary branches 0–8, 0–7 cm long.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets in digitate clusters, sessile and at the end of primary branches, 8 to many per cluster, linear-lanceolate, 9–27 mm long, 2.4–5.2 mm wide, slightly compressed to almost terete, rachilla straight to sometimes slightly curved.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes pale reddish-brown to pale brown, concave, elliptic-ovate, 5.1–8.1 mm long, 1.8–4.8 mm wide, keel slightly excurrent, sometimes slightly green, many veins on both sides, apex very shortly mucronate
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 3.
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Filaments 2.5–5(–8) mm long.
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anthers 1.9–3.7 mm long
Morphology Reproductive morphology Fruits
Nutlet dark brown, obovoid, flattened on one side, this side pressed against the rachilla, 1.9–3 mm long, 1–1.4 mm wide, smooth or minutely papillose.
Ecology
On sea shores, in sand dunes; sea-level–60 m
Conservation
Least Concern (LC)
Distribution
Flora districts: K7 T3 T6 T8 Range: Senegal, Gambia, Sierra Leone, Guinea, Liberia, Ivory Coast, Ghana, Togo, Benin, Nigeria, Equitorial Guinea, Gabon, Congo-Kinshasa, Somalia, Angola, Mozambique

[FSOM]

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

Morphology General Habit
Robust perennial with a thick horizontal, often curving rhizome 3–5 mm thick with stems set at intervals of c. 0.5–2 cm
Morphology Stem
Stems 20–80 cm long and 1–4 mm thick, triangular, smooth or slightly scabrid on angles, with numerous (10–15) crowded leaves at their base
Morphology Leaves
Leaf-blades 15–60 cm long and 2–6 mm wide, flat or folded with a very prominent keeled midrib on lower surface
Morphology Reproductive morphology Inflorescences
Inflorescence a congested or lax anthela of numerous crowded whitish to reddish brown spikelets or of 1 sessile group of spikelets and 1–several stalked groups of spikelets
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets 8–40 x 3–5 mm, lanceolate, flattened, 8–25-flowered
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes 4.5–6 mm long, ovate, whitish to light or medium reddish brown with prominent lateral nerves and a green midrib excurrent into a short awn
Morphology Reproductive morphology Flowers Gynoecium Style
Style 3-branched
Morphology Reproductive morphology Fruits
Nutlet 1.7–1.9 x 1.2–1.3 mm wide, black, elliptic, prominently triangular with flat sides and a short apiculus; surface smooth and shiny.
Distribution
S3; Kenya
Ecology
Sea-level to 50 m.

Native to:

Angola, Benin, Cape Provinces, Cape Verde, Congo, Equatorial Guinea, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, Ivory Coast, Kenya, KwaZulu-Natal, Liberia, Madagascar, Mauritania, Mozambique, Nigeria, Senegal, Sierra Leone, Somalia, Tanzania, Togo, Zaïre

Cyperus crassipes Vahl appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Mori, S.A. [14050], Bahia K000188833

First published in Enum. Pl. Obs. 2: 299 (1805)

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.
  • Browning, J. & al. (2020). Flora Zambesiaca 14: 1-455. Royal Botanic Gardens, Kew.
  • Cabezas, F., Aedo, C. & Velayos, M. (2004). Checklist of the Cyperaceae of Equatorial Guinea (Annobón, Bioko, Río Muni) Belgian Journal of Botany 137: 3-26.
  • Gordon-Gray, K.D., Ward, C.J. & Edwards, T.J. (2006). Studies in Cyperaceae in Southern Africa 38: The identities of Cyperus natalensis, Cyperus crassipes and Cyperus brevipes South African Journal of Botany 72: 133-138.
  • 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.
  • Sosef, M.S.M. & al. (2006). Check-list des plantes vasculaires du Gabon Scripta Botanica Belgica 35: 1-438.
  • Velayos, M., Aedo, C., Cabezas, F., de la Estrella, M., Barberá, P. & Fero, M. (eds.) (2014). Flora de Guinea Ecuatorial 11: 1-416. Consejo superior de investigaciones científicas, Real jardín botánico, Madrid.

Literature

Kew Backbone Distributions

  • Barry, J. P. & Celles, J.S. (1991). Flore de Mauritanie 2: 360-550. Centre Regional de Documentation Pedagogique, Nice.
  • Cabezas, F., Aedo, C. & Velayos, M. (2004). Checklist of the Cyperaceae of Equatorial Guinea (Annobón, Bioko, Río Muni) Belgian Journal of Botany 137: 3-26.
  • Gordon-Gray, K.D., Ward, C.J. & Edwards, T.J. (2006). Studies in Cyperaceae in Southern Africa 38: The identities of Cyperus natalensis, Cyperus crassipes and Cyperus brevipes South African Journal of Botany 72: 133-138.
  • Sita, P. & Moutsambote, J.-M. (2005). Catalogue des plantes vasculaires du Congo, ed. sept. 2005: 1-158. ORSTOM, Centre de Brazzaville.
  • Sosef, M.S.M. & al. (2006). Check-list des plantes vasculaires du Gabon Scripta Botanica Belgica 35: 1-438.

Flora of Somalia

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

Flora of Tropical East Africa

  • Enum. Pl. 2: 299 (1805)
  • Flora of Somalia 4: 126 (1995).
  • Haines & Lye, Sedges & Rushes E. Afr.: 262, fig. 534 (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