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This species is accepted, and its native range is 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
Typus: Kenya, Naivasha District: Njoroa Gorge, Hell’s Gate steam jets, Verdcourt 714 (K!, holo.; EA, K!, PRE, iso.)
Morphology General Habit
Very densely tufted perennial 15–40 cm long with very many (up to several hundred) rigidly erect narrowly striate culms with dense upwardly directed hairs ± 0.5 mm long (not densely spreading pubescent)
Morphology Leaves
Leaf sheaths pale yellow-brown, up to 5 cm long, densely appressed-pubescent, with long hairs at the throat; blades short, 1.2 cm long
Morphology Reproductive morphology Inflorescences
Inflorescences obtriangular, not open and spreading, of one sessile spikelet and 4–5 stalked spikelets; stalks stout, strongly striate, 5–7 mm long.
Morphology Reproductive morphology Inflorescences Bracts
Bracts 5–9 mm long, apiculate.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets 9 mm long.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes pale yellow-brown with white-margined green keels, ovate, 3.5–4 mm long, 3 mm wide, acute, finely shortpubescent
Morphology Reproductive morphology Fruits
Nutlets white, elongate-obovoid, ± trigonous, 1–1.1 mm long, 0.8 mm wide, not transversely rugose, but with pattern of elongate surface cells.
Morphology Reproductive morphology Flowers Gynoecium Style
Style base pale, not persistent
Ecology
On very hot soil by steam jets; 1700–1950 m
Note
It is extraordinary that this plant, well known to the many visitors to Hell’s Gate, appears to be new. It has mostly been named “ Fimbristylis exilis” but differs from B. hispidula indumentum, habit and nutlet; it has also been confused with four other quite different species. Material from Suswa has more reduced inflorescences and sometimes darker spikelets. The specific epithet is a Swahili translation of ‘Hell’s Gate’.
Distribution
Range: Not known elsewhere Flora districts: K3 K6

Native to:

Kenya

Bulbostylis mlangoyajehenum Verdc. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Verdcourt, B. [714], Kenya K000743529 holotype
Verdcourt, B. [714], Kenya K000743530 isotype
Verdcourt, B. [714], Kenya K000743531 isotype

First published in Fl. Trop. E. Africa, Cyperac.: 85 (2010)

Accepted by

  • 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