In total, there are 14 species. The homeland of most of them is Central and South America (including northern Argentina), some representatives of the genus are found in the wild in the southern states of the United States. Two species grow in Africa. Synonyms: lat.Bignonia stans, Stenolobium incisum, Engl. Yellow Bells. Very close relatives of the tekoma in appearance, form and structure of flowers are plants of the genus bignonia and campsis, which leads to some confusion in the determination of the taxation affiliation of certain species.