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This species is accepted, and its native range is South Sudan to Zambia.
A specimen from Kew's Herbarium

[FTEA]

Euphorbiaceae, A. R.-Smith. Flora of Tropical East Africa. 1987

Morphology General Habit
Perennial herb with a tuberous rootstock to 30 × 1–5 cm., producing several woody subterranean stems branching at ground-level; branches shortly pubescent, decumbent, 15–40(–60) cm. high, usually woody, sometimes herbaceous when produced after burning.
Morphology Leaves
Leaves linear-lanceolate to oblanceolate, to 45 × 6 mm., puberulous when young, glabrescent, base and apex rounded, margin entire, midrib prominent beneath; petiole to 2 mm. long; glandular stipules triangular, reddish.
Morphology Reproductive morphology Inflorescences
Cymes irregular, with the primary cyathium on a naked peduncle to 4.5 cm. long, the lateral branches leafy, with cyathia subsessile or on peduncles to 2 cm. long; bracts similar to the leaves, single or occasionally paired, pubescent on the margin, glabrescent.
Morphology Reproductive morphology Inflorescences Cyathia
Cyathia 2.5–4 × 5–8 mm., with broadly funnel-shaped involucres, pubescent; glands 5 or up to 8 on the larger primary cyathium, distant, subcircular to transversely elliptic, 1–1.5 × 1.5–2.5 mm., shallowly saucer-shaped to 2-lipped, margin entire to irregularly crenulate; lobes transversely rectangular, ± 1.5 × 2 mm., margin deeply toothed, ciliate.
Morphology Reproductive morphology Flowers
Male flowers many:bracteoles laciniate, apices feathery; stamens 3.5–4 mm. long, with pedicels usually pubescent at the apex. Female flower:perianth a distinct rim below the densely pubescent shortly pedicellate ovary; styles ± 2 mm. long, pubescent below, joined for up to 1/3, with spreading, channelled, shortly to distinctly bifid apices.
sex Male
Male flowers many:bracteoles laciniate, apices feathery; stamens 3.5–4 mm. long, with pedicels usually pubescent at the apex.
sex Female
Female flower:perianth a distinct rim below the densely pubescent shortly pedicellate ovary; styles ± 2 mm. long, pubescent below, joined for up to 1/3, with spreading, channelled, shortly to distinctly bifid apices.
Morphology Reproductive morphology Fruits
Capsule shallowly 3-lobed, ± 7 mm. in diameter, densely pubescent.
Morphology Reproductive morphology Seeds
Seeds globose, 3 mm. in diameter, smooth, brown, mottled.
Figures
Fig. 87/4,5, p. 463.
Habitat
On sandy rocky soils in grassland and open woodland, often appearing after burning; 700–2100 m.
Distribution
K2 K3 K5 T1 T4 T5 T7 U1 U2 U3 U4

Native to:

Kenya, Rwanda, Sudan, Tanzania, Uganda, Zambia

Euphorbia bongensis Kotschy & Peyr. ex Boiss. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Adamson, J. [Bally 12396], Kenya 2022.000
Tweedie [897], Kenya 2023.000
Bally, P.R.O. [E. 180], Tanzania 2090.000
Schweinfurth, G. [1591] K000252804

First published in A.P.de Candolle, Prodr. 15(2): 1264 (1866)

Accepted by

  • Darbyshire, I., Kordofani, M., Farag, I., Candiga, R. & Pickering, H. (eds.) (2015). The Plants of Sudan and South Sudan: 1-400. Kew publishing, Royal Botanic Gardens, Kew.
  • Govaerts, R., Frodin, D.G. & Radcliffe-Smith, A. (2000). World Checklist and Bibliography of Euphorbiaceae (and Pandaceae) 1-4: 1-1622. The Board of Trustees of the Royal Botanic Gardens, Kew.

Literature

Kew Backbone Distributions

  • Darbyshire, I., Kordofani, M., Farag, I., Candiga, R. & Pickering, H. (eds.) (2015). The Plants of Sudan and South Sudan: 1-400. Kew publishing, Royal Botanic Gardens, Kew.

Flora of Tropical East Africa

  • A.D.Q. Agnew, Upland Kenya Wild Flowers p. 223 (1974).
  • A.J. Jex-Blake, Some Wild Flowers of Kenya p. 37 (1948).
  • F. W. Andr., The Flowering Plants of the Anglo-Egyptian Sudan 2: 15 (1952).
  • Kotschy & Peyr., Pl. Tinné: 40, 19A (1867).
  • N.E. Br. in Flora of Tropical Africa 6(1): 521 (1911), excl. Kassner 413.

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