(Newbouldia laevis)
Newbouldia is a genus of plants in the family Bignoniaceae native to Africa. It is a monotypic genus consisting of the species Newbouldia laevis (common name: boundary tree). The tree has a wide distribution across West and Central Africa. It is often planted as a boundary marker. It also has various medicinal uses. It is called ewe Akoko in Yoruba people of west Africa and Ogilisi by the Igbo people.