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This species is accepted, and its native range is Eritrea to Zimabwe, 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, Mt Schoata, Schimper 1391 (P, holo.; K, iso.)
Morphology General Habit
Perennial, fairly robust, succulent, up to 70 cm tall, with a slightly swollen pseudobulb, up to 1 cm in diameter, with a short rhizome and sometimes with 1–5 cm long stolons.
Morphology Culms
Culms tufted, 15–60 cm long, 1–3 mm wide, trigonous, glabrous
Morphology Leaves
Leaves many at the base, up to 40 cm long. Leaf sheath uncoloured or pale brown, sometimes partly purplish, 3–8 cm long. Leaf blade linear, often inrolled or folded, 16–34 cm long, 1.3–5.1 mm wide, scabrid on margin, apex acuminate
Morphology Reproductive morphology Inflorescences Bracts
Involucral bracts leaflike, erect to spreading, 3–4, lowermost 3–12 cm long, 1.2–3 mm wide
Morphology Reproductive morphology Inflorescences
Inflorescence a simple anthela, sometimes very loosely capitate, primary branches 0–4, 0–3.7 cm long.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets in loose clusters, sessile and at the end of primary branches, 3–10 per cluster, spreading or reflexed, linear-lanceolate, 5.8–24 mm long, 1.6–3.7 mm wide, rachilla straight.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes pale to dark reddish-brown, ovate-oblong, 3.1–4.2 mm long, 1.4–1.9 mm wide, keel green to reddish-brown, with 4–8 slender veins on either side, apex rounded to acuminate
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 3.
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Filaments 2.8–4.3 mm long.
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anthers 1.7–2.5 mm long
Morphology Reproductive morphology Fruits
Nutlet brown, oblong-ellipsoid, trigonous, 1.6–2.1 mm long, 0.5–0.8 mm wide, densely papillose
Figures
Fig. 36, p238
Ecology
In grassland and wooded grassland, on rocky hills, and on shallow soil covering rocks; 450–2100 m
Conservation
Least Concern (LC)
Note
" C. leptolepis is brought into synonymy here; it only differes from typical C. amauropus in the rather tighter heads, and the long stolons.
Distribution
Range: Rwanda, Sudan, Eritrea, Ethiopia, Somalia, Zambia Flora districts: U1 U2 K1 K2 K3 K4 K6 K7T1 T2 T3 T4 T5 T6 T7

[FSOM]

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

Morphology General Habit
Fairly robust succulent perennial with a short rhizome, and sometimes with 1–5 cm long stolons
Morphology Stem
Stems 15–60 cm long and 0.5–2 mm thick (but often thicker near the base when fresh), triangular, glabrous
Morphology Leaves
Leaves up to 25 cm long and 1–4 mm wide, flat, scabrid at least on margin; sheaths numerous at the base and producing a cylindrical pseudobulb, pallid or pale brown, but sometimes partly purplish
Morphology Reproductive morphology Inflorescences
Spikes 1–2 x 1–3 cm, with 5–10 spreading or reflexed spikelets Inflorescence a 1–8 cm wide anthela consisting of several usually stalked short spikes, but the spikes may appear like digitate spikelet-clusters when consisting of 3–5 spikelets only; involucral bracts 2–5, leafy, erect or spreading, the largest 3–15 cm long and 1–3 mm wide; anthela of (1–)3–6 spikes on 0.2–4 cm long peduncles
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets 5–17 x 2–4 mm, linear-lanceolate, 8–18-flowered
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes 3–4 mm long, ovate-oblong, pale or dark reddish brown with 4–8 slender ribs on each side of the green or reddish brown midrib that is usually ending in the apex
Morphology Reproductive morphology Flowers Gynoecium Style
Style with 3 branches
Morphology Reproductive morphology Fruits
Nutlet 1.6–1.8 x 0.5–0.7 mm, triangular, oblong-elliptic, brown and densely papillose.
Distribution
N1, 3; C1 northeastern and eastern Africa.
Ecology
Probably below 500 m.

Native to:

Eritrea, Ethiopia, Kenya, Mozambique, Oman, Rwanda, Saudi Arabia, Somalia, Sudan, Tanzania, Uganda, Yemen, Zambia, Zimbabwe

Cyperus amauropus Steud. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Harris, T. [134], Mozambique K000545115
Hildebrandt, J.M. [2657], Kenya Cyperus ibeensis K000321447 Unknown type material

First published in Syn. Pl. Glumac. 2: 33 (1854)

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.
  • Harris, T., Darbyshire, I. & Polhill, R. (2011). New species and range extensions from Mt Namuli, Mt Mabu and Mt Chiperone in northern Mozambique Kew Bulletin 66: 241-151.
  • 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.
  • Harris, T., Darbyshire, I. & Polhill, R. (2011). New species and range extensions from Mt Namuli, Mt Mabu and Mt Chiperone in northern Mozambique Kew Bulletin 66: 241-151.

Flora of Somalia

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

Flora of Tropical East Africa

  • Fl. Eth. 6: 466 (1997).
  • Fl. Somalia 4: 138 (1995)
  • Haines & Lye, Sedges & Rushes E. Afr.: 213, figs. 428, 429 (1983)
  • Syn. Pl. Glum. 2: 33 (1854)

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