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This species is accepted, and its native range is Ethiopia, Somalia, Kenya, Uganda.
A specimen from Kew's Herbarium

[FTEA]

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

Morphology General Habit
Glabrous perennial shrub scrambling to 3 m. high, forming tangled masses of semi-woody branches, with very slender brittle branchlets to ± 15 cm. long arising at right-angles to the main branches and possibly deciduous; branches less than 1 cm. thick, glaucous, with leaf-scars made ± prominent by the formation of a dark brown callus produced as the leaf falls.
Morphology Leaves
Leaves sessile, linear-lanceolate, to 30 × 3 mm., reflexed, caducous.
Morphology Reproductive morphology Inflorescences
Cymes terminal on lateral branchlets, in 3–5-branched umbels surrounding a central cyathium, with simple rays to 3 cm. long, sometimes with 1–2 rays replaced by sterile leafy branchlets; bracts deltoid, ± 4.5 × 3.5 mm., but resembling the leaves below the umbel, caducous.
Morphology Reproductive morphology Inflorescences Cyathia
Cyathia on peduncles to 2 mm. long, ± 3 × 5 mm., with funnel-shaped involucres; glands 4, or 5 on the deciduous central cyathium which often develops only ♂ flowers, subcircular to transversely elliptic, ± 2 × 3.5 mm., yellow; lobes transversely rectangular, ± 0.7 × 1.5 mm., apex deeply notched, margin finely ciliate.
sex Male
Male flowers:bracteoles numerous, spathulate, plumose; stamens 4.3 mm. long.
Morphology Reproductive morphology Flowers
Female flower:ovary pedicellate; styles 2.5 mm. long, joined at the base, with spreading, thickened, distinctly bifid apices. Male flowers:bracteoles numerous, spathulate, plumose; stamens 4.3 mm. long.
sex Female
Female flower:ovary pedicellate; styles 2.5 mm. long, joined at the base, with spreading, thickened, distinctly bifid apices.
Morphology Reproductive morphology Fruits
Capsule obtusely 3-lobed, ± 5.5 × 6.5 mm., exserted on a pedicel ± 6 mm. long.
Morphology Reproductive morphology Seeds
Seeds ovoid, ± 3 × 2.5 mm., brownish grey, rugose, with a caruncle 1 mm. across.
Figures
Fig. 89/4, p. 472.
Habitat
Dry rocky slopes and sandy soils with open Acacia woodland; 400–1875 m.
Distribution
K1 U1

Native to:

Ethiopia, Kenya, Somalia, Uganda

Euphorbia calamiformis P.R.O.Bally & S.Carter appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Nov 10, 1960 Gillett, J.B. [14174], Ethiopia K000252894 holotype
Gillett, J.B. [14174], Ethiopia 2621.000 holotype
Powys [157], Kenya 47500.000

First published in Kew Bull. 40: 824 (1985)

Accepted by

  • 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

Flora of Tropical East Africa

  • Bally & S. Carter in Kew Bulletin 40: 824 (1985).

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