Skip to main content
This species is accepted, and its native range is Eritrea to N. Tanzania, Yemen (J. Ta'kar).
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, Simen Mts, Schoata, Schimper 588 (B!, holo.; BR!, K!, M!, P!, WAG!, iso.)
Morphology General Habit
Perennial, up to 50 cm tall, with slightly swollen culm-base covered by rather thin to rather thick grey or brown leaf sheaths which only rarely split into fibres.
Morphology Culms
Culms tufted, 5–50 cm long, 0.5–1.5 mm wide, trigonous, glabrous
Morphology Leaves
Leaves few to many. Leaf blade linear, rather thick, 5–45 cm long, 1.1–2.4 mm wide, scabrid at least on margin and primary vein, apex acuminate Leaf sheath grey to brown, upper ones membraneous, 3.2–5.7 cm long.
Morphology Reproductive morphology Inflorescences Bracts
Involucral bracts leaf-like, spreading to reflexed, 2–4, lowermost 3–20 cm long, 1–2.2 mm wide
Morphology Reproductive morphology Inflorescences
Inflorescence capitate, ovoid to hemispherical, 7–11 mm long, 7–15 mm wide.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets lanceolate, 3.5–7.3 mm long, 1–2.2 mm wide, only perfecting 1–2 nutlets.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes pale grey with large dark reddish brown or blackish central area or patches on either side of keel, lanceolate, 3–6 mm long, 1.6–1.9 mm wide, keel slender with 3–5 veins on either side, apex rounded
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 2–3.
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Filaments 4.7–6 mm long.
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anthers 1.1–1.8 mm long
Morphology Reproductive morphology Fruits
Nutlet reddish brown to grey, narrowly obovoid to ellipsoid-oblong, trigonous, 2–2.3 mm long, 0.6–0.8 mm wide, minutely papillose.
Ecology
Montane grasslands, giant heath zone, roadsides in rain forest, usually in swampy sites or on stream banks; 1900–3650 m
Conservation
Least concern (LC) due to the habitat and altitude range
Note
HB has decided the differences of C. crassivaginatus with both type and the range of specimens seen for C. plateilema did not warrant separate status.
Distribution
Range: Ethiopia Flora districts: U1 U2 U3 K3 K4 K6 T2

Native to:

Eritrea, Ethiopia, Kenya, Sudan, Tanzania, Uganda, Yemen

Cyperus plateilema (Steud.) Kük. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Schimper [1300], Ethiopia K000321396 holotype
Schimper [588], Ethiopia K000321397 isotype
Schimper [579], Ethiopia K000321398 isolectotype
Schimper [s.n.], Ethiopia K000362978
Schimper [575], Ethiopia K000362976
Schimper [1308], Ethiopia K000362977

First published in H.G.A.Engler (ed.), Pflanzenr., IV, 20(101): 558 (1936)

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.
  • 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

  • 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

  • E.P. 4, 20 (101): 558 (1936)
  • Haines & Lye, Sedges & Rushes E. Afr.: 216, fig. 435 (1983)
  • Lye, Fl. Eth. 6: 467 (1997).

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