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This species is accepted, and its native range is Ethiopia to S. Tropical Africa.
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

Type
Type: Sudan, Djur, Seriba Ghattas, Schweinfurth 198, series III (B, holo.; K!, iso.)
Morphology General Habit
Perennial, up to 83 cm tall, with a slightly swollen culm base with 1–10 cm long slender stolons.
Morphology Culms
Culms few, 25–80 cm long, 0.7–2.5 mm wide, trigonous, glabrous
Morphology Leaves
Leaves up to 45 cm long. Leaf blade linear, flat or sometimes folded, 22–39 cm long, 2–3.8 mm wide, scabrid on margin and primary vein, apex acuminate Leaf sheath 2.5–9 cm long.
Morphology Reproductive morphology Inflorescences Bracts
Involucral bracts leaf-like, spreading to reflexed, 3–6, lowermost 5.5–30 cm long, 1.9–3.2 mm wide
Morphology Reproductive morphology Inflorescences
Inflorescence capitate, a solitary globose head, 10–20 mm long, 11–22 mm wide.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets many per inflorescence, ovate-lanceolate, 6.5–14.1 mm long, 2.1–4 mm wide, falling off entire when mature.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes whitish with a reddish-brown tinge, especially near apex, ovate to boatshaped, 4–5.1 mm long, 1.6–2 mm wide, keel, apex obtuse, frayed
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 2–3.
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Filaments ± 5.4 mm long.
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anthers 2.2–2.7 mm long
Morphology Reproductive morphology Fruits
Nutlet grey-brown, ellipsoidoblong, trigonous, 1.7–2 mm long, 0.7–0.8 mm wide, minutely papillose.
Ecology
In grassland, woodland and rocky outcrops; sea-level up to 1800 m
Conservation
Least Concern due to its wide distribution and common habitat
Distribution
Range: Congo-Kinshasa, Rwanda, Ethiopia, Sudan Flora districts: U1 K7 T1 T3 T4 T5 T6 T7 T8

Native to:

Ethiopia, Kenya, Malawi, Rwanda, Sudan, Tanzania, Uganda, Zambia, Zaïre, Zimbabwe

Cyperus diurensis Boeckeler appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Schweinfurth, G. [198 (Series 3)], Sudan K000321399 isotype
Bidgood, S. [5120], Tanzania K000190348
Bidgood, S. [5272], Tanzania K000190501

First published in Flora 62: 556 (1879)

Accepted by

  • Browning, J. & al. (2020). Flora Zambesiaca 14: 1-455. Royal Botanic Gardens, Kew.
  • Darbyshire, I., Kordofani, M., Farag, I., Candiga, R. & Pickering, H. (eds.) (2015). The Plants of Sudan and South Sudan: 1-400. Kew publishing, 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

Kew Backbone Distributions

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

Flora of Tropical East Africa

  • E.P. 4, 20 (101): 560 (1936)
  • F.T.A. 8: 381 (1902)
  • Fl. Eth. 6: 467, fig. 212.118 (1997).
  • Flora 62: 556 (1879)
  • Haines & Lye, Sedges & Rushes E. Afr.: 223, fig. 454 (1983)

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