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This species is accepted, and its native range is Yemen, E. Sudan to S. Africa.
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

Morphology Stem
Stems angular, 0.2–0.4 mm thick, glabrous
Morphology Leaves
Leaf sheaths pale brown; blades 2–6 cm long, 0.3–0.8 mm wide, flat but appearing almost filiform, densely scabrid
Morphology Reproductive morphology Inflorescences
Inflorescence a solitary terminal spikelet or 2–3 clustered spikelets on peduncles 1–12 cm long but often with additional sessile spikelets at the plant base; normal spikelets 3–8 mm long, 2–4 mm wide, often with spreading glumes.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes pale to dark reddish brown, usually with green midrib 3–4 mm long, glabrous with midrib and sometimes wings scabrid
Morphology Reproductive morphology Flowers Gynoecium Style
Style branches 2 Style base brown, persistent.
Morphology Reproductive morphology Fruits
Nutlets whitish turning grey or brownish, obovoid, 1–1.4 mm long, 0.9–1 mm wide with reticulate pattern of isodiametric cells in longitudinal rows.
Ecology
Rocky river slopes, sandy soil in rock crevices, Pennisetum grassland, roadsides, weed in grass plots; 1800–2700 m
Note
" Gilbert 4703 (Kenya, Naivasha District: Lake Naivasha, behind Fisherman’s camp, 29 May 1977) determined as B. humilis consists of plants 1.5–4 cm tall forming small dense tufts, and has been determined as B. striatella by Lye. Haines & Lye key this out under inflorescence a solitary spikelet and under inflorescence an open anthela but not under inflorescence headlike; but most specimens I have seen have heads of several sessile spikelets. The lectotype has both kinds. They do, however, key it out in their group “inflorescence an open anthela” but I have seen no material to warrant this. " Bidgood et al. 5515 (Tanzania, T 4, Mpanda District: Uzondo Plateau, 15 Apr. 2006, from seepage area in Loudetia grassland over rocks at 1550 m) appears to be a form with uniformly reduced inflorescences of one spikelet.
Type
Type: South Africa, Natal, Buchanan 86 (K, lecto., chosen by Lye)
Morphology General Habit
Tufted annual or short-lived perennial 12–15 cm tall, often forming dense cushions about 5 cm tall.
Distribution
Range: Ethiopia, South Africa Flora districts: K1 K3 K 6T2 T 4 (see Note)

[FTEA]

Cyperaceae, K Hoenselaar, B. Verdcourt & H. Beentje. Hypolytrum, D Simpson. Fuirena, M Muasya. Flora of Tropical East Africa. 2010

Type
Type: Ethiopia, near Matamma, Schweinfurth 2046 G [see Note], lecto.; BM, BREM, K, iso.)
Morphology General Habit
Small annual forming tufts with many stems 3–10 cm long
Morphology Leaves
Leaves filiform, 2–10 cm long, scabrid
Morphology Reproductive morphology Inflorescences
Inflorescence a solitary terminal spikelet and with additional cleistogamous flowers at base of stem, which give rise to underground fruits.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets ovoid-ellipsoid, 3–8 mm long, 1–1.5 mm wide, 5–10-flowered.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes red-brown with paler midrib, ± 1.5 mm long, sparsely hairy
Morphology Reproductive morphology Fruits
Normal nutlets whitish, obovoid, 0.8–0.9 mm long, 0.5–0.8 mm wide, transversely wrinkled, the wrinkles with longitudinal microstriae, with dark purple persistent style-base; nutlets from stembases white to greyish pink, more triangular, 1.2–1.3 mm long, ± 0.9 mm wide, strongly transversely wrinkled, with persistent reddish brown style-base
Ecology
Rather bare soil in Brachystegia woodland; 1400–1600 m
Note
Boeckeler cited several Schweinfurth specimens but Haines & Lye cite Schweinfurth 2046 as type. Later Lye gives 2046 at G as holotype but it is to be taken as a lectotype, although I would have thought it would be at B rather than G.
Distribution
Range: Ethiopia Flora districts: T7

Native to:

Botswana, Cape Provinces, Ethiopia, Free State, Kenya, KwaZulu-Natal, Namibia, Northern Provinces, Sudan, Swaziland, Tanzania, Yemen

Bulbostylis humilis (Kunth) C.B.Clarke appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Apr 1, 1888 Drege [s.n.], South Africa K000416776
Apr 1, 1888 Wood, J.M. [1587], South Africa K000416777
Apr 1, 1888 Drege [s.n.], South Africa K000416775
Apr 1, 1888 Cooper, T. [3364], South Africa Bulbostylis striatella K000416778
Mar 1, 1888 Schimper [355], Ethiopia Bulbostylis striatella K000416720
Nov 1, 1887 Buchanan, J. [86], South Africa Bulbostylis striatella K000416780 Unknown type material
Flanagan, H.G. [1266], South Africa Bulbostylis striatella K000416779
Wood, J.M. [4762 B], South Africa Bulbostylis striatella K000416781
Apr 1, 1888 Schweinfurth, G. [2046], Sudan Bulbostylis sphaerocarpa K000416721

First published in T.A.Durand & H.Schinz, Consp. Fl. Afric. 5: 614 (1894)

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.
  • Retief, E. & Meyer, N.L. (2017). Plants of the Free State inventory and identification guide Strelitzia 38: 1-1236. National Botanical Institute, Pretoria.

Literature

Kew Backbone Distributions

  • Browning, J. & al. (2020). Flora Zambesiaca 14: 1-455. Royal Botanic Gardens, Kew.
  • Retief, E. & Meyer, N.L. (2017). Plants of the Free State inventory and identification guide Strelitzia 38: 1-1236. National Botanical Institute, Pretoria.

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