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This species is accepted, and its native range is NE. & E. Tropical Africa, Arabian Peninsula.

[FSOM]

M. Thulin et al. Flora of Somalia, Vol. 1-4 [updated 2008] https://plants.jstor.org/collection/FLOS

Morphology General Habit
Annual herb to 30 cm high, or a short-lived perennial with a fleshy root, stem slightly swollen at the base to 1 cm thick, the whole plant sparsely hairy, with spreading white hairs to 1 mm long, becoming glabrous at maturity
Morphology Leaves
Leaves ovate to linear-lanceolate, 1.5–6 x 0.6–2 cm, margin entire or with a few minute glandular teeth at the rounded apex; petiole 0.5–1.5 cm long
Morphology Reproductive morphology Inflorescences
Cymes in 3-branched umbels, forking 2–4 times with primary rays 1.5–4 cm long; bracts similar to the leaves but smaller
Morphology Reproductive morphology Inflorescences Bracts Involucre
Cyathia 2.5 mm in diam., puberulous; glands 4, 1 mm broad, reddish green
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary densely pubescent; styles 1.4 mm long, bifid to halfway
Morphology Reproductive morphology Fruits
Capsule exserted on a recurved pedicel 6.5 mm long, oblong-trigonous, 4.8 x 4 mm, sparsely hairy
Morphology Reproductive morphology Seeds
Seeds oblong, obscurely 4-angled, 4 x 2 mm, surface lightly wrinkled, greyish brown, with a yellow cap-like caruncle 1.6 mm wide.
Distribution
N1, 3; C2; S1, 3; Eritrea, Ethiopia, Kenya, NE Tanzania, Saudi Arabia
Ecology
Altitude range 150–975 m.
Vernacular
Kusambar (Somali)

[FTEA]

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

Morphology General Habit
Sparingly branched annual herb to 30 cm. high, stem slightly swollen at the base and semi-succulent to 1 cm. thick, the whole plant ± sparsely pilose, with spreading white hairs to 1 mm. long, glabrescent at maturity.
Morphology Leaves
Leaves ovate-lanceolate to linear-lanceolate, to 8 × 1 cm., base cuneate, apex rounded, margin entire, midrib prominent on the lower surface; petiole to 1 cm. long; stipules absent or glandular and rudimentary.
Morphology Reproductive morphology Inflorescences
Cymes axillary and in terminal 3-branched umbels, with primary rays to 6 cm. long; bracts similar to the leaves.
Morphology Reproductive morphology Inflorescences Cyathia
Cyathia on peduncles 1 mm. long, 2.2 × 2.5 mm., with cup-shaped involucres, sparsely pilose; glands 4, spreading, subcircular, 1 mm. wide, bright reddish green; lobes subquadrate, 1 mm. long, margin toothed, ciliate.
Morphology Reproductive morphology Flowers
Male flowers:bracteoles linear, deeply toothed, ciliate; stamens 2 mm. long. Female flower:ovary pilose; styles 1.4 mm. long, joined at the base, bifid to halfway.
sex Male
Male flowers:bracteoles linear, deeply toothed, ciliate; stamens 2 mm. long.
sex Female
Female flower:ovary pilose; styles 1.4 mm. long, joined at the base, bifid to halfway.
Morphology Reproductive morphology Fruits
Capsule exserted on a reflexed pilose pedicel 6.5 mm. long, oblong-trigonous, 4.8 × 4 mm., sparsely pilose.
Morphology Reproductive morphology Seeds
Seeds oblong, obscurely 4-angled, 4 × 2 mm., greyish brown, lightly wrinkled, with a yellow caruncle 1.6 mm. wide.
Habitat
On sandy soils in open bushland; 450–1650 m.
Distribution
K1 K4 K6 T3

Native to:

Eritrea, Ethiopia, Kenya, Oman, Saudi Arabia, Somalia, Tanzania

Euphorbia pirottae A.Terracc. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Ash [1896], Ethiopia Euphorbia gorinii 35879.000

First published in Annuario Reale Ist. Bot. Roma 5: 97 (1894)

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.
  • Rahman, M.A. & al. (2002). Notes on succulent plant species of Saudi Arabia Bangladesh Journal of Plant Taxonomy 9(1): 25-40.
  • Yang, Y., Riina, R., Morawetz, J.J., Haevermans, T., Aubriot, X. & Berry, P.E. (2012). Molecular phylogenetics and classification of Euphorbia subgenus Chamaesyce (Euphorbiaceae) Taxon 61: 764-789.

Literature

Kew Backbone Distributions

Flora of Somalia

  • Flora Somalia, Vol 1, (1993) Author: by S. Carter [updated by M. Thulin 2008]

Flora of Tropical East Africa

  • Cufod., Enumeratio Plantarum Aethiopiae Spermatophyta (Supplement in Bull. Jard. Bot. Brux.) p. 454 (1958).
  • N.E.Br. in Flora of Tropical Africa 6(1): 559 (1911).
  • Terrac. in Ann. Ist. Bot. Roma 5: 97 (1894).

Flora of Somalia
Flora of Somalia
http://creativecommons.org/licenses/by-nc-sa/3.0

Flora of Tropical East Africa
Flora of Tropical East Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Herbarium Catalogue Specimens

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