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This species is accepted, and its native range is SW. Tanzania to Zambia.
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: Tanzania, Chunya District: Rungwa Game Reserve, 1 km W of Itigi–Mbeya road, Sayalel in C.A.W.M. 5320 (EA, holo.; K!, iso.)
Morphology General Habit
Tufted perennial with short horizontal rhizome to 3 mm thick.
Morphology Stem
Stems 30–62 cm tall, 0.7–1.5 mm thick, glabrous; base covered by fibrous remains of old leaf sheaths
Morphology Leaves
Leaves several per stem, 5–15 cm long, 1.5–2.3 mm wide, flat or inrolled, margin and midrib with minute spine-like hairs.
Morphology Leaves Leaf sheaths
Sheath pale brown, 4.4–7.5 cm long, glabrous
Morphology Reproductive morphology Inflorescences
Inflorescence bracts ± 3. Leaf-like, the largest 3–10 cm long. Inflorescence a dense terminal dirty white head 3–7 × 5–9 mm, of many tightly packed spikelets.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets cylindrical, to 3 mm long, many-flowered.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes boat-shaped, 1.9–2.5 × 0.3–0.5 mm, apex obtuse
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 1–3
Morphology Reproductive morphology Flowers Gynoecium Style
Style 3-branched
Morphology Reproductive morphology Fruits
Nutlet whitish turning dark brown, 1.3–1.7 × 0.3–0.4 mm, minutely papillose.
Ecology
Seasonally wet depression in miombo woodland; ± 1380 m
Distribution
Flora districts: T7 Range: Congo-Kinshasa, Zambia

Native to:

Tanzania, Zambia, Zaïre

Cyperus simpsonii (Muasya) Larridon appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Sayalel, P.O. [5320], Tanzania Kyllingiella simpsonii K000416625 holotype

First published in Pl. Ecol. Evol. 144: 352 (2011)

Accepted by

  • Larridon, I., Reynders, M., Huygh, W., Bauters, K., Vrijdaghs, A., Leroux, O., Muasya, A.M., Simpson, D.A. & Goetghebeur, P. (2011). Taxonomic changes in C3 Cyperus (Cyperaceae) supported by molecular phylogenetic data, morphology, embryology, ontogeny and anatomy Plant ecology and evolution 144: 327-356.

Literature

Kew Backbone Distributions

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

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