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This species is accepted, and its native range is Eritrea to Kenya.
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: Eritrea, Kohaito Plateau, Schweinfurth 120 (K!, holo.)
Morphology General Habit
Dwarf perennial with short woody rhizome, 14 cm tall.
Morphology Culms
Culms tufted, 4.5–12 cm long, 0.4–0.8 mm wide, trigonous, smooth
Morphology Leaves
Leaf blade linear, flat but folded when dried, 2–5 cm long, 0.6–1 mm wide, apex acute to acuminate, scabrid on margins and primary vein Leaves up to 6 cm long. Leaf sheath pale brown to brown, 0.5–1 cm long.
Morphology Reproductive morphology Inflorescences Bracts
Involucral bracts leaf-like, spreading, 1–3, lowermost 1.5–3 cm long, 0.6–1 mm wide
Morphology Reproductive morphology Inflorescences
Inflorescence capitate.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets 3–8 per head, linear to narrowly ellipsoid, 5–16 mm long, 1.3–1.9 mm wide, rachis straight, sometimes slightly curved.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dark reddish-brown to almost black with a prominent pallid margin, ovate, 1.9–2.2 mm long, 0.8–1.3 mm wide, several marginal veins on both sides, keel rounded, apex acute to rounded
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 2.
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Filaments 1.9–2.2 mm long.
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anthers 1.1–1.6 mm long
Morphology Reproductive morphology Flowers Gynoecium Style
Style usually undivided
Morphology Reproductive morphology Fruits
Nutlet silvery grey, ellipsoid-obovoid, trigonous to rounded, 0.6–0.8 mm long, 0.3–0.4 mm wide, minutely papillose in longitudinal rows
Ecology
Wet depressions in wooded grassland; 1530 m
Conservation
Least Concern (LC)?
Note
Only two collections from the Flora area. The nutlet is rounded and sometimes looks more two-sided then three-sided; this would place it in Pycreus, but there is not enough material to support this. More material is needed.
Distribution
Flora districts: K4 Range: Eritrea, Ethiopia

Native to:

Eritrea, Ethiopia, Kenya

Cyperus holostigma C.B.Clarke ex Schweinf. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Schweinfurth, G. [120], Eritrea K000321381 isotype

First published in Bull. Herb. Boissier 2(App. 2): 103 (1894)

Accepted by

  • 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

  • Hoenselaar, K., Verdcourt, B. & Beentje, H. (2010). Cyperaceae Flora of Tropical East Africa: 1-466.

Flora of Tropical East Africa

  • Bull. Herb. Boissier 2(App. 2): 103 (1894)
  • Fl. Eth. 6: 464 (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