Summary
The new species Euphorbia suborbicularis Thulin, E. kabridarensis Thulin, E. piceoides Thulin and E. michaelii Thulin, from the Somali National Regional State (Ogaden) of Ethiopia, are described and illustrated. E. suborbicularis is probably related to the eastern African E. polyantha, E. kabridarensis is obviously a close relative of E. intricata in south-eastern Ethiopia, southern Somalia and north-eastern Kenya, E. piceoides is close to E. adjurana in southern Ethiopia and northern Kenya, whereas E. michaelii is apparently related to E. xylacantha from northern Somalia and adjacent parts of Ethiopia.
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References
Carter, S. (1993). Euphorbia. In: M. Thulin (ed.), Flora of Somalia 3: 306 – 337. Royal Botanic Gardens, Kew.
Gilbert, M. G. (1995). Euphorbia. In: S. Edwards, Mesfin Tadesse & I. Hedberg (eds), Flora of Ethiopia and Eritrea 2 (2): 331 – 378. Addis Ababa University & Uppsala University.
Acknowledgements
I am grateful to Friedrich Wilhelmi and Hassan Yusuf Kaariye at the Dibatag Field Research Project of Al Wabra Wildlife Preservation (Sheikh Saoud Mohd. Bin Ali Al-Thani) for assistance in the field, to the Swedish Research Council for financial support, to Margaret Tebbs for the illustrations, and to Mike Gilbert for comments on the manuscript.
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Thulin, M. New species of Euphorbia (Euphorbiaceae) from eastern Ethiopia. Kew Bull 64, 469–476 (2009). https://doi.org/10.1007/s12225-009-9138-y
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DOI: https://doi.org/10.1007/s12225-009-9138-y