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This species is accepted, and its native range is Nigeria, Chad, S. Tanzania to N. Botswana.

[FTEA]

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

Type
Type: Nigeria, Bornu, Vogel 64 & 65 (K, syn.)
Morphology General Habit
Perennial, slender, up to 26 cm tall, with a slightly swollen culm-base covered by the fibrous remains of old leaf sheaths.
Morphology Culms
Culms 3–23 cm long, 0.8–0.9 mm wide, trigonous, smooth
Morphology Leaves
Leaf blade linear, folded, sometimes canaliculate, 7–13 cm long, 0.8–0.9 mm wide, glabrous, apex acuminate Leaf sheath pale brown, 1–2.5 cm long. Leaves up to 15.5 cm long.
Morphology Reproductive morphology Inflorescences Bracts
Involucral bracts leaf-like, spreading, 2, lowermost 7–8.5 cm long, 0.8–1 mm wide
Morphology Reproductive morphology Inflorescences
Inflorescence capitate.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets up to 25 per inflorescence, elliptic-lanceolate, 7.5–10.5 mm long, 2.2–2.5 mm wide.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes very pale brown to greyish-white, sometimes with slight reddish dots on the wings, ovate, 2.1–2.2 mm long, 1.6–1.9 mm wide, keel greenish, 3-veined, apex acuminate
Morphology Reproductive morphology Flowers Gynoecium Style
Style usually unbranched
Morphology Reproductive morphology Fruits
Nutlet dark grey to black, pear-shaped, ± 0.8 mm long, 0.6 mm wide, minutely papillose.
Ecology
Wet depression in Terminalia spinosa wooded grassland; 125 m
Conservation
Least Concern (LC) due to its wide distribution
Note
C. clavinux is closely related to C. meeboldii but has bigger glumes and nutlets.
Distribution
Flora districts: T8 Range: Nigeria, Chad, Zambia, Malawi, Zimbabwe, Botswana

[FWTA]

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

Diagnostic
Similar to C. meeboldii Kük. but with fewer, larger, pale spikelets in the head
Ecology
Seasonally damp sandy ground.

Native to:

Botswana, Chad, Malawi, Nigeria, Tanzania, Zambia, Zimbabwe

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

First published in D.Oliver & auct. suc. (eds.), Fl. Trop. Afr. 8: 319 (1901)

Accepted by

  • Browning, J. & al. (2020). Flora Zambesiaca 14: 1-455. Royal Botanic Gardens, Kew.
  • 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 West Tropical Africa

  • J. Raynal in Adansonia, sér. 2, 6: 306 (1966).
  • Kük. in Engl., Pflanzenr. Cyper. 304 (1936)
  • in F.T.A. 8: 319 (1901)

Flora of Tropical East Africa

  • Durand & Schinz, Consp. Fl. Afr. 5: 551 (1894), nom. nud.
  • E.P. 4, 20 (101): 304 (1936)
  • F.T.A. 8: 319 (1902)
  • Haines & Lye, Sedges & Rushes E. Afr.: 261, figs. 530, 531 (1983).

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

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