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This species is accepted, and its native range is Burundi to W. & SW. Tanzania.
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: Burundi, Ujiji, Peter 38250 (B!, holo.; B!, K!, P, iso.)
Morphology General Habit
Slender perennial (the specimens from our area look annual!), with slender underground runners.
Morphology Stem
Stem 3–40 cm tall, 0.5–1.2 mm across, glabrous, base slightly thickened with remnants of leaf sheaths
Morphology Leaves
Leaves 5–15 cm long, 1–2 mm wide
Morphology Reproductive morphology Inflorescences Bracts
Involucre bracts 2–6. Leafy, to 9 cm long
Morphology Reproductive morphology Inflorescences
Inflorescence white, globose to hemispherical, 8–13 mm across.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelet bracts whitish hyaline, narrowly triangular, 2.5–3.5 mm long.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes whitish, lanceolate, 3–4 mm long, lower part slightly enclosing flowering parts and nutlet, upper part thickened, subacute
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 2–3
Morphology Reproductive morphology Flowers Gynoecium Style
Style 3-branched
Morphology Reproductive morphology Fruits
Nutlet dark purple-brown, obovoid, 1 mm long
Ecology
Moist roadside ditch and bank, seasonally inundated grassland; 1250–1700 m
Conservation
Possibly undercollected, with the three known localities so far apart; the type was collected in the 1920s. Data deficient (DD).
Note
" Gereau & Kayombo 3927 (Tanzania, Iringa District: Livingstone Mts near source of Ngolo R., Feb. 1991) and Lovett 1153 (Iringa District: Ngwazi swamp) are very similar but stolons are not visible – but the basal parts are incomplete, so they are likely to be this taxon. The habitat is wet grassland at 1830–1860 m.
Distribution
Range: Burundi Flora districts: T4 T7

Native to:

Burundi, Tanzania

Cyperus ascohemisphaericus Goetgh. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Dec 1, 1977 Milne-Rehead, E. [38250], Tanzania Ascolepis hemisphaerica K000416403 isolectotype

First published in Phytotaxa 166: 36 (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

  • 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

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