Wikipedia
Isonema
Isonema is a genus of plant in family Apocynaceae first described as a genus in 1810. It is native to Africa.
Species- Isonema buchholzii Engl. - Nigeria, Cameroon
- Isonema infundibuliflorum Stapf - Cameroon, Gabon, Zaire
- Isonema smeathmannii Roem. & Schult. - W Africa (Ghana, Guinea, Guinea-Bissau, Ivory Coast, Liberia, Senegal, Sierra Leone)