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Kew Bulletin

, 73:59 | Cite as

A new species of Leucas, L. gypsicola (Lamiaceae), from gypsum outcrops in eastern Ethiopia

  • Alan J. PatonEmail author
  • Ib Friis
  • Sebsebe Demissew
Article

Summary

A new species of Leucas, here described as L. gypsicola A. J. Paton, Friis & Sebsebe, was collected in 2015, on gypsum outcrops of the Gorrahei Formation at the Lele Hills between Ginir and Imi, Oromia National Regional State, Ethiopia. The closest relatives of L. gypsicola are two species, which occur in the dry parts of Ethiopia and Somalia (L. abyssinica) and in the Rift Valley of Kenya (L. hirundinaris). Leucas gypsicola seems to be a narrow endemic, restricted to outcrops of gypsum dominated by the tree Commiphora guidottii in Acacia-Commiphora woodland and bushland east of the Ethiopian highlands, similar to the narrowly restricted ranges of two recently described species of Commicarpus, C. macrothamnus Friis & O. Weber and C. leleensis Friis & Sebsebe (Nyctaginaceae).

Key Words

Acacia-Commiphora bushland Commiphora guidottii conservation endemism Gorrahei Formation Leucas sect. Lasiocorys Somalia-Masai floristic region 

Notes

Acknowledgements

The authors wish to thank Victoria C. Friis for her drawing of the new species in Fig. 1. Wege Abebe, staff member at the Ethiopian National Herbarium, Addis Ababa University, and Ermias Getachew, driver at the Department of Plant Biology and Biodiversity, Addis Ababa University, are thanked for their kind and excellent assistance to Ib Friis during field work in 2015. We are, as always, grateful to the Carlsberg Foundation for grants covering field work and Ib Friis’ and Sebsebe Demissew’s travels to Kew.

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Copyright information

© The Board of Trustees of the Royal Botanic Gardens, Kew 2018

Authors and Affiliations

  1. 1.Royal Botanic Gardens, KewRichmondUK
  2. 2.Biosystematics, Natural History Museum of Denmark, Zoological MuseumUniversity of CopenhagenCopenhagen ØDenmark
  3. 3.The National Herbarium, Department of Plant Biology and BiodiversityAddis Ababa UniversityAddis AbabaEthiopia

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