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This species is accepted, and its native range is Tropical & S. Africa, Madagascar.

[FWTA]

Cyperaceae, Miss S. S. Hooper. Flora of West Tropical Africa 3:2. 1972

Vegetative Multiplication Rhizomes
Rhizome creeping
Morphology Reproductive morphology Inflorescences
Head cylindrical, bracts very long
Ecology
In grassland and on forest paths.

[FTEA]

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

Type
Type: Uganda, Toro District: Kivata, Scott Elliot 7554 (K, holo., out on loan; B!, iso.)
Morphology General Habit
Perennial.
Vegetative Multiplication Rhizomes
Rhizome 2.5 cm long, thick.
Morphology Culms
Culm 5–10 cm long, thick, not bulbous at base
Morphology Leaves
Leaf sheaths entire, reddish Leaves 5–10 cm long, 3–4 mm wide.
Morphology Reproductive morphology Inflorescences Bracts
Involucral bracts 4, spreading. Leaf-like, the lower to 6.3 cm long
Morphology Reproductive morphology Inflorescences
Inflorescence of 1–3 spikes, dusky white with yellow tinge, the central one cylindric, 1.3 cm long, to 7 mm wide, dense.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets to 3.5 mm long, 2–3-flowered, often perfecting 2 nutlets.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes ovate, keel wingless, smooth [though Haines & Lye say with a few spinelike teeth], excurrent into a recurved short bristle, 2–3-veined on each side
Morphology Reproductive morphology Flowers Gynoecium Style
Style very short, 2-fid
Morphology Reproductive morphology Fruits
Nutlet straw-coloured or pale brown, ellipsoid, over half the glume length.
Ecology
Unclear; ‘up to 2400 m’
Conservation
Data deficient (DD), as information on habitat and possible threats is needed
Note
I am assuming the culm is glabrous, as I was stupid enough not to check this at B; if the culm is scabrid near its apex, this would key to K. comosipes. A specimen at B (Tanzania, Iringa District: Uhehe, 1899, Prince s.n.) has been identified as K. ruwenzoriensis by C.B. Clarke himself– but a detslip by Kükenthal says ‘ Kyllinga chrysantha var. decolorans’ – and this taxon is now a subspecies of K. comosipes. Clarke says this is perhaps allied to K. erecta, from which it differs in ‘being stouter with larger spikes, and the glumes with recurved points. The greater number of flowers might be due to luxuriance maybe.’ The type was said to be “common up to 8000 feet” (2400 m), fide Taylor. HB: also differs from K. erecta in non-bulbous culm base, and found at higher altitude. They seem to be ? intermediate between nervosa and oblonga.
Distribution
Flora districts: Known only from the type Flora districts: U2

Native to:

Angola, Cameroon, Cape Provinces, Ethiopia, Gulf of Guinea Is., Kenya, KwaZulu-Natal, Madagascar, Malawi, Rwanda, Sudan, Tanzania, Uganda, Zambia, Zaïre

Cyperus ruwenzoriensis (C.B.Clarke) Huygh appears in other Kew resources:

Date Reference Identified As Barcode Type Status
May 1, 2001 Cheek, M. [9018], Cameroon Cyperus pinguis K000050648

First published in Phytotaxa 166: 40 (2014)

Accepted by

  • Govaerts, R., Nic Lughadha, E., Black, N., Turner, R. & Paton, A. (2021). The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. https://doi.org/10.1038/s41597-021-00997-6 Scientific Data 8: 215.

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.
  • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
  • Hoenselaar, K., Verdcourt, B. & Beentje, H. (2010). Cyperaceae Flora of Tropical East Africa: 1-466.

Flora of Tropical East Africa
Flora of Tropical East Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Flora of West Tropical Africa
Flora of West Tropical Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Herbarium Catalogue Specimens

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