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This species is accepted, and its native range is S. Kenya to N. Malawi.
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, Mt Kilimanjaro, Johnston s.n. (K!, lecto., chosen by Haines & Lye)
Morphology General Habit
Slender tufted annual or short-lived perennial 10–30 cm tall with creeping rhizome (fide Vollesen).
Morphology Stem
Stems glabrous
Morphology Leaves
Leaves filiform, up to half the length of the stems, scabrid.
Morphology Leaves Leaf sheaths
Sheaths hairy and with long white hairs at margins of throat
Morphology Reproductive morphology Inflorescences
Inflorescence open with 1–5 solitary stalked spikelets, 5–9 mm long, 2 mm wide.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes rusty brown with yellowish keel, elliptic, 2.5–3.5 mm long, shortly hairy, shortly mucronate
Morphology Reproductive morphology Fruits
Nutlet whitish becoming dark grey, obovoid, 1 mm long, not transversely wrinkled but reticulate with large quadrate cells in vertical rows.
Morphology Reproductive morphology Flowers Gynoecium Style
Stylebase reddish brown, persistent.
Ecology
Hillside and valley grassland, Erica-Agauria associations, mossy areas with Lycopodium, swamps; 300–2000 m
Note
Haines & Lye state only recorded from Moshi District but then “drawn from Renvoize & Abdallah 1718” which was collected in the W Usambaras. C.B. Clarke cites 4 syntypes but Haines & Lye cite only the Johnston specimens, which is therefore the equivalent of a lectotypification. The Bally specimen from Kenya is a good match of the type so I have accepted the original determination that seems to be in Nelmes’ handwriting, although Haines & Lye do not mention a Kenya record.
Distribution
Flora districts: K6 T2 T3 T4 T8 Range: Malawi

Native to:

Kenya, Malawi, Tanzania

Bulbostylis johnstonii C.B.Clarke appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Nov 1, 1889 Johnston, H.H. [s.n.], Tanzania K000416737
Whyte [s.n.], Malawi K000416754

First published in D.Oliver & auct. suc. (eds.), Fl. Trop. Afr. 8: 442 (1902)

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. (1996). World Checklist of Seed Plants 2(1, 2): 1-492. 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

  • Ann. Fac. Sci. Univ. Dakar 9: 76 (1963)
  • F.D.-O.A. 1: 415 (1938)
  • F.T.A. 8: 442 (1902)
  • Haines & Lye, Sedges & Rushes E. Afr.: 126, figs. 242, 243 (1983).
  • J. E.A. Nat. Hist. Soc. 25 (110): 5 (1965)
  • Opera Bot. 59: 92 (1980)

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