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This species is accepted, and its native range is Eritrea to S. Africa, Arabian Peninsula.
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: Ethiopia, Enchadcap, Schimper 991 (P!, holo.; HAL, K!, MUN!, P!, UPS!, WAG!, iso.)
Morphology General Habit
Perennial, slender to fairly robust, with a woody base and curving horizontal stolons up to 15 cm long, 1.5–3 mm in diameter, up to 72 cm tall.
Morphology Culms
Culms few, 15–60 cm long, 0.7–4.4 mm in diameter, trigonous, sometimes almost triquetrous, glabrous or slightly scabrid below the inflorescence
Morphology Leaves
Leaf sheath green to pale brown, 3–10 cm long. Leaves up to 35 cm long. Leaf blade linear, flat, rather stiff, 7–28 cm long, 1.5–5 mm wide, scabrid on margin and primary vein, apex acuminate
Morphology Reproductive morphology Inflorescences Bracts
Involucral bracts leaf-like, erect to spreading, 3–5, lowermost 4.5–22 cm long, 2–4.8 mm wide
Morphology Reproductive morphology Inflorescences
Inflorescence capitate or a simple and compact anthela, primary branches 0–6, 0–11 cm long.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets in crowded digitate spikes, erect, sessile and at the end of primary branches, 5–10 spikelets per spike, lanceolate, somewhat compressed, 7–18 mm long, 2–2.8 mm wide, rachilla straight.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dark reddish-brown to almost black, ovate, 2.7–4 mm long, 1.8–2.2 mm wide, keel green, apex rounded
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 3.
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Filaments 3.4–4.2 mm long.
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anthers 1.5–2.7 mm long
Morphology Reproductive morphology Fruits
Nutlet greyish brown to olive green, obovoid, trigonous, 1.6–1.9 mm long, 0.9–1.1 mm wide, with minute isodiametric surface cells.
Ecology
In seasonally wet grassland, swamps, bushland; 1700–2800 m
Conservation
Least Concern due to its wide distribution and common habitat
Distribution
Range: Congo-Kinshasa, Rwanda, Burundi, Ethiopia, South Africa, Swaziland Flora districts: U2 U3 U4 K1 K3 K4 K5 K6T1 T2 T3 T4 T7

Native to:

Burundi, Cape Provinces, Eritrea, Ethiopia, Free State, Kenya, KwaZulu-Natal, Lesotho, Malawi, Northern Provinces, Rwanda, Saudi Arabia, Sudan, Swaziland, Tanzania, Uganda, Yemen, Zambia, Zaïre, Zimbabwe

Cyperus rigidifolius Steud. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Jan 1, 1988 Collenette, I.S. [6282], Saudi Arabia K000480537
Jan 1, 1982 Boulos, L. [14044], Saudi Arabia K000480533
Jan 1, 1977 Hepper, F.N. [6158], Yemen K000480538
Jan 1, 1893 Steudner [901], Ethiopia K000321350
Feb 1, 1892 Schimper [991], Ethiopia K000321347 isotype
Feb 1, 1892 Schimper [186], Ethiopia K000321348 isotype
Feb 1, 1892 Schimper [186], Ethiopia K000321349 isotype
Richards, H.M. [8161], Zambia K000480551
Gibbs Russell, G.E. [1246], Zimbabwe K000480555
Collenette, I.S. [4414], Saudi Arabia K000480534
Pawek, J. [9902], Malawi K000480553
Bisset, E. [146], Yemen K000480531
Richards, H.M. [4076], Zambia K000480552
Wood, J.R.I. [1242], Yemen K000480539
Gereau, R.E. [3505], Tanzania K000480550
Hendy, C. [101], Yemen K000480535
Bisset, E. [262], Yemen K000480532
Gibbs Russell, G.E. [1245], Zimbabwe K000480554
Robinson, E.A. [1942], Zimbabwe K000480556
Schimper [1290], Ethiopia K000321352 Unknown type material
Schimper [1247], Ethiopia K000321351 Unknown type material
Miller, A.G. [3542], Yemen K000480536
Brain, C.K. [6980], Zimbabwe K000480557

First published in Flora 25: 593 (1842)

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.
  • Edwards, S., Demissew, S., & Hedberg, I. (eds.) (1997). Flora of Ethiopia and Eritrea 6: i-xxviii, 1-586. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.
  • 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.
  • 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.
  • Edwards, S., Demissew, S., & Hedberg, I. (eds.) (1997). Flora of Ethiopia and Eritrea 6: i-xxviii, 1-586. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.

Flora of Tropical East Africa

  • A.V.P.: 55 (1957)
  • E.P. 4, 20 (101): 104 (1936)
  • F.T.A. 8: 367 (1902)
  • Fl. Eth. 6: 447, fig. 212.84 (1997).
  • Flora 25: 593 (1842)
  • Haines & Lye, Sedges & Rushes E. Afr.: 185, figs. 359, 360 (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