Adenium
Adenium is a genus of flowering plants in the family Apocynaceae first described as a genus in 1819. It is native to Africa and the Arabian Peninsula. Cultivation and uses. "Adenium obesum" is grown as a houseplant in temperate and tropical regions. Numerous hybrids have been developed. Adeniums are appreciated for their colorful flowers, but also for their unusual, thick caudices. They can be grown for many years in a pot and are commonly used for bonsai. Because seed-grown plants are not genetically identical to the mother plant, desirable varieties are commonly propagated by grafting. Genetically identical plants  can also be propagated by cutting. However, cutting-grown plants do not tend to develop a desirable thick caudex as quickly as seed-grown plants. The sap of "Adenium boehmianum", "A. multiflorum", and "A. obesum" contains toxic cardiac glycosides and is used as arrow poison throughout Africa for hunting large game. Classification. The genus "Adenium" has been held to contain as many as twelve species. These are considered by other authors to be subspecies or varieties. A late-20th-century classification by Plazier recognizes five species. Common names. "Adenium obesum" is also known as the desert rose. In the Philippines, due  to its resemblance to the related genus "Plumeria", and the fact that it was introduced to the Philippines from Bangkok, Thailand, the plant is also called as "Bangkok kalachuchi". Due to its resemblance to a miniature frangipani tree and its popularity in bonsai, it is also sometimes known as Japanese frangipani.