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This species is accepted, and its native range is E. Ethiopia.

[KBu]

Thulin, M. 2009. New species of Euphorbia (Euphorbiaceae) from eastern Ethiopia. Kew Bulletin 64: 469. DOI: https://doi.org/10.1007/s12225-009-9138-y

Conservation
This species may well have a wider range, but in view of its very restricted known distribution and the small number of plants seen, it should be regarded as Critically Endangered CR D1. However, at present there are no particular threats to the type locality.
Distribution
Euphorbia kabridarensis is known only from the type locality NE of KebriDehar (Kabridar) in the eastern part of the Somali National Regional State (previously Harerge Region) of Ethiopia. Only a few plants of this species were seen in the area.
Ecology
Acacia-Commiphora bushland on rocky hillside with mixture of sand and rocks; c. 900 m. Associated woody plants in the type locality include Adenia venenata, Commiphora rostrata, Euphorbia cf. scheffleri, Moringa rivae and Wrightia demartiniana.
Morphology General Habit
Slender shrub, c. 2.5 m tall, unarmed; bark on old stems greyish brown, transversely flaking; young stems dark grey or greyish brown, glabrous
Morphology Leaves
Leaves clustered at tips of branches, leaving prominent scars; blade obovate to elliptic, 10 – 22 × 4 – 12 mm, entire, flat or with slightly undulate and revolute margin, subacute to rounded or slightly emarginate at the apex, cuneate at the base, minutely pubescent along margins, otherwise glabrous, venation obscure except for prominent ± rounded midrib below; petiole c. 1 mm long, ciliolate; stipules minute reddish brown pointed glands
Morphology Reproductive morphology Fruits
Capsule sessile, obtusely 3-lobed, c. 5 × 6 mm, greyish, densely puberulous
Morphology Reproductive morphology Inflorescences Cyathia
Cyathia bisexual, sessile, solitary at branch tips; bracts obovate-spathulate, 1.5 – 2.5 × 1 – 1.5 mm, often apiculate, reddish, ciliolate and otherwise glabrous or sparsely pubescent, deciduous; involucre cup-shaped, 3 – 3.5 × 4.5 – 5 mm including glands, densely puberulous; glands 5, well separated, subcircular, c. 1.5 mm in diameter, pressed to the involucre, green, glabrous above, minutely puberulous beneath, with minutely crenulated margin; involucral lobes fan-shaped, c. 1.5 mm long and wide, with laciniate margin
Morphology Reproductive morphology Seeds
Seeds ovoid, c. 3 × 2.5 mm, pale brown, smooth, without caruncle
Note
Euphorbia kabridarensis is closely related to E. intricata S. Carter in sect. LycopsisBoiss., a species distributed in south-eastern Ethiopia, southern Somalia and north-eastern Kenya. These two species agree in being unarmed woody plants with leaves with rounded midribs on the underside, solitary and puberulouscyathia, and puberulous capsules. However, E. kabridarensis is a shrub c. 2.5 m tall with transversely flaking bark on old stems and glabrous young branches (not a tuberous-rooted shrublet to 30 cm or rarely 80 cm tall with pubescent stems sometimes peeling at the base), cyathia with almost circular glands pressed to the involucre (not with transversely elliptic and spreading glands), and slightly larger capsules and seeds (c. 5 × 6 and 3 × 2.5 mm, respectively, versus c. 3.5 × 4.5 and 2.5 × 2 mm).
sex Female
Female flower: ovary sessile, densely puberulous; styles 3, c. 1.2 mm long, puberulous, joined for c. 0.4 mm at the base, with spreading flattened shortly bifid tips
sex Male
Male flowers many; bracteoles c. 2 mm long, with feathery tips; pedicels c. 2.5 mm long, puberulous in upper part; filaments c. 1.2 mm long, minutely puberulous; anther lobes yellow, sessile, ovoid, c. 0.7 mm long
Type
Ethiopia, Somali National Regional State, Harerge, 50 km NE of KebriDehar, Thulin, Kaariye & Wilhelmi 11585 (holotypus ETH; isotypi K, UPS).

Native to:

Ethiopia

Euphorbia kabridarensis Thulin appears in other Kew resources:

First published in Kew Bull. 64: 471 (2009)

Accepted by

  • Govaerts, R.H.A. (2011). World checklist of selected plant families published update Facilitated by the Trustees of the Royal Botanic Gardens, Kew.
  • 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.

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 Bulletin
Kew Bulletin
http://creativecommons.org/licenses/by-nc-sa/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