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This species is accepted, and its native range is Tanzania to S. Tropical Africa.
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: Angola, Kinebe R., Malumgue, Baum 311 (K!, M!, syn.) & Mapalauna, Baum 311a (K!, syn.)
Morphology General Habit
Perennial, up to 78 cm tall, with a somewhat swollen tussocky base, covered by black and dark brown firbrous remains of leaf sheaths.
Morphology Culms
Culms tufted, 18–77 cm long, 0.6–1.6 mm wide, trigonous, with a few deep longitudinal ridges, glabrous Culms solitary, 7–17.5 cm long, 0.6–1.1 mm wide, trigonous, with a few longitudinal ridges, glabrous
Morphology Reproductive morphology Inflorescences
Inflorescence capitate, a dense globose head, 7–12 mm long, 7–11 mm wide. Inflorescence capitate, with an irregular to triangular outline, consisting of one central spike and 1 or 2 lateral spikes, 5–11 mm long, 4–12 mm wide.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets many per head, linear-lanceolate, 5.2–8.9 mm long, 1.1–1.3 mm wide, producing one nutlet only. Spikelets many per inflorescence, linear-lanceolate, 4.4–4.9 mm long, 0.8–1 mm wide, falling off entirely.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes yellow, linear-lanceolate, 3.8–6 mm long, 1.4–2 mm wide, keel flat with many veins on either side, apex obtuse Glumes golden to yellowish-orange, linear-lanceolate, 2.1–4 mm long, 1–2 mm wide, keel flat with several veins on either side, apex obtuse
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 3. Stamens 3.
Conservation
Probably Least Concern (LC) due to distribution
Note
Close to C. chrysocephalus is a ?new species, Hoenselaar ined. Four specimens from around Lake Victoria are very small, have a head consisting of 1–3 spikes, and are geographically very localized, well away fromthe distribution area of C. chrysocephalus sensu stricto.
Morphology General
Perennial, slender, up to 19 cm tall, the base slightly swollen, and covered in the fibrous remains of old leaf sheaths, sometimes stoloniferous.
Morphology Leaves
Leaf blade linear, folded, 6.2–16 cm long, 1.8–3.7 mm wide, slightly scabrid on margins, apex acuminate Leaf sheath brown, turning black and fibrous when old, 1.8–3.5 cm long. Leaf sheath black, breaken up into fibres when older, 4–8 cm long. Leaves up to 42 cm long. Leaf blade linear, folded to canaliculate, 13–34 cm long, 1.3–1.9 mm wide, slightly scabrid on margins, apex often showing signs of burning Leaves up to 19.5 cm long.
Morphology Reproductive morphology Inflorescences Bracts
Involucral bracts leaf-like, spreading to reflexed, 2–4, lowermost 2.9–9.8 cm long, 1.6–3 mm wide Involucral bracts leaf-like, spreading to recurved, 1–2, lowermost 1.2–9(–17) cm long, 1.5–2 mm wide
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Filaments 3–3.5 mm long. Filaments 3.7–5.8 mm long.
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anthers 1.3–2 mm long Anthers 1.9–2.4 mm long
Morphology Reproductive morphology Fruits
Nutlet not seen. Nutlet greyish, linear-oblong, 2.8–3.2 mm long, 0.6–0.8 mm wide, minutely papillose.
Ecology
On shallow soil on rocks; 1150–1800 m Boggy grassland or on thin soil overlying rock; 950–1800 m
Distribution
Range: Not known elsewhere Range: Congo-Kinshasa, Burundi, Angola, Zambia Flora districts: U4 T1 Flora districts: T4 T7 T8

Native to:

Angola, Burundi, Malawi, Tanzania, Zambia, Zaïre

Cyperus chrysocephalus (K.Schum.) Kük. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Baum, H. [311], Angola K000362626
Baum, H. [311a], Angola K000362627 Unknown type material

First published in R.E.Fries, Wiss. Erg. Schwed. Rhodesia-Kongo-Exp. 1911-1912, Erg.: 5 (1921)

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.

Literature

Kew Backbone Distributions

  • Browning, J. & al. (2020). Flora Zambesiaca 14: 1-455. Royal Botanic Gardens, Kew.

Flora of Tropical East Africa

  • Haines & Lye, Sedges & Rushes E. Afr.: 220, fig. 446 (1983).
  • Wiss. Ergebn. Schwed. Rhod.Kongo-Exped.: 5 (1921)

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