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This species is accepted, and its native range is Somalia to S. Africa, W. Indian Ocean.
Cyperus prolifer

[FSOM]

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

Morphology Reproductive morphology Fruits
Nutlet 0.4–0.5 x 0.3–0.4 mm, obovate, triangular, whitish to brown, almost smooth to minutely papillose.
Distribution
N1 scattered in east tropical Africa, South Africa and the Madagascar region.
Ecology
From sea-level to 500 m.
Morphology General Habit
Fairly robust perennial with crowded stems on a thick creeping rhizome
Morphology Stem
Stems 25–110 cm long and 2–7 mm thick, terete or triangular, glabrous
Morphology Leaves
Leaf-blades absent; sheaths reddish brown to dark purple, glabrous; the apex ending in a short mucro
Morphology Reproductive morphology Inflorescences
Inflorescence an open umbel-like anthela 10–20 cm in diam.; major involucral bracts 0.5–3 cm long, leafy; major inflorescence-branches 50–100 per stem, all of about equal length, 4–10 cm long, carrying one digitately arranged cluster of spikelets or one sessile and 1–several stalked groups of spikelets; some inflorescences with 8–25 cm long secondary stems, each carrying a few basal sheaths and a new smaller inflorescence
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets 3–12 x 1–1.3 mm, linear, 7–25-flowered
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes 1.2–1.5 mm long, light reddish brown with paler margin; midrib ending in the apex or slightly excurrent
Morphology Reproductive morphology Flowers Gynoecium Style
Style 3-branched

[FTEA]

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

Type
Type: Mauritius [Insula Franciae], Jos. Martia s.n. (P, holo.)
Morphology General Habit
Perennial, fairly robust, up to 130 cm tall, with a thick creeping rhizome and purple to blackish-brown roots.
Morphology Culms
Culms crowded, 55–120 cm long, 3–7 mm wide, terete to trigonous, smooth
Morphology Leaves
Leaf sheath reddish-brown to dark purple, 2–32 cm long Leaves with blades absent.
Morphology Reproductive morphology Inflorescences Bracts
Involucral bracts scale-like to almost leaf-like, spreading, 3–4, lowermost 1.5–3(–11) cm long, 2–5 mm wide
Morphology Reproductive morphology Inflorescences
Inflorescence a simple to compound anthela, primary branches up to 50–100, all equal in length giving the inflorescence a spherical to umbel-like appearance, 3–11 cm long.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets in digitate clusters, at the end of primary and sometimes secondary branches, 1–5 per cluster, linear to ovoid-lanceolate, 2.7–15 mm long, 0.9–1.9 mm wide, rachis straight.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes pale reddish-brown, ovate, 1.1–1.6 mm long, 0.7–1 mm wide, keel pale brown to green, apex rounded to acute, slightly excurrent
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 3.
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Filaments 0.9–1.6 mm long.
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anthers 0.5–1.2 mm long, with spiny apex
Morphology Reproductive morphology Fruits
Nutlet white to almost brown, obovoid, 0.4–0.5 mm long, 0.3–0.4 mm wide, almost smooth to minutely papillose.
Ecology
Swamp edges, stream-sides, seasonally flooded grasslands and in and along permanent pools, especially along the coastal areas; sea-level up to 450 m
Conservation
Least Concern; common habitat and within the distribution area is common to abundant.
Note
" Richards 25209 from Mbulu/Singida District: Yaida Swamp, Jan. 1970 has very sharply angled stems and comes from 1430 m altitude, quite beyond the normal range. Wingfield 2124 from Dar University Campus (Aug. 1972) has similarly sharply angled stems. Easily recognizable due to its inflorescence shape, which shows resemblance to C. papyrus, making this taxon somewhat like a dwarf version.
Distribution
Range: Somalia, Mozambique, South Africa; Madagascar Flora districts: K7 T6 T8 Z P

Native to:

Cape Provinces, Kenya, KwaZulu-Natal, Madagascar, Mauritius, Mozambique, Somalia, Tanzania, Zimbabwe

Introduced into:

California, Florida, Hawaii

Cyperus prolifer Lam. appears in other Kew resources:

First published in Tabl. Encycl. 1: 147 (1791)

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.
  • Marais, W. & Araujo, A.C. (2018). Flore des Mascareignes 202: 1-99. IRD Éditions, MSIRI, RBG-Kew, Paris.

Literature

Kew Backbone Distributions

  • Browning, J. & al. (2020). Flora Zambesiaca 14: 1-455. Royal Botanic Gardens, Kew.
  • Marais, W. & Araujo, A.C. (2018). Flore des Mascareignes 202: 1-99. IRD Éditions, MSIRI, RBG-Kew, Paris.

Flora of Somalia

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

Flora of Tropical East Africa

  • E.P. 4, 20 (101): 256 (1936)
  • F.T.A. 8: 339 (1902)
  • Fl. Somalia 4: 117 (1995).
  • Haines & Lye, Sedges & Rushes E. Afr.: 171, figs. 326, 327 (1983)
  • Tabl. Encycl. 1: 147 (1791)

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

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/