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This species is accepted, and its native range is NE. Africa to S. Iran.
Cyperus macrorrhizus

[FSOM]

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

Morphology General Habit
Densely tussocky perennial with a c. 5 mm thick horizontal rhizome densely covered by long chestnut brown glossy leaf sheaths not splitting into fibres; roots with tomentum
Morphology Stem
Stems somewhat crowded, 30–80 cm long and 2–3 mm thick, terete below, obtusely triangular below the inflorescence, glabrous
Morphology Leaves
Leaves from the basal 15 cm, often 10–15 from each stem; sheaths straw-coloured above, brown below but with an uncoloured margin, glabrous; blades 10–40 cm long and 1–3 mm wide, semiterete to canaliculate, glabrous or somewhat notched on margin, the apex obtuse
Morphology Reproductive morphology Inflorescences
Inflorescence to c. 10 cm long and wide, a globose head of many crowded spikelets or with 1 globose group of spikelets and 1–8 stalked globose or digitate groups of spikelets on 1–6 cm long somewhat compressed peduncles; major involucral bracts 1–4, leaf-like, erect or spreading, the largest to 20 cm long and 2–3 mm wide
Morphology Leaves Prophyll
Prophylls at base of peduncles 6–12 mm long, tubular, pallid to light reddish brown
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets 8–15 x 3–5 mm, ovate-lanceolate, whitish with acute apex, 15–25-flowered with closely imbricate glumes; axis conspicuously flattened
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes 4–5 mm long, ovate-elliptic, whitish but often with a yellow or orange-brown patch at apex and sometimes along margin, with many distinct lateral nerves and usually green midrib ending in the obtuse apex or slightly excurrent
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 3
Morphology Reproductive morphology Flowers Gynoecium Style
Style c. 3 mm long, 3-branched almost to the base
Morphology Reproductive morphology Fruits
Nutlet 1.8–2 mm long, obovate, almost smooth.
Distribution
N1, 2 widespread but rare from North Africa to India.
Ecology
Near sea-level to 150 m.

Native to:

Egypt, Iran, Palestine, Somalia, Sudan

Cyperus macrorrhizus Nees appears in other Kew resources:

First published in R.Wight, Contr. Bot. India: 73 (1834)

Accepted by

  • 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.

Literature

Kew Backbone Distributions

  • 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.

Flora of Somalia

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

Flora of Somalia
Flora of Somalia
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

Kew Science Photographs
Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/