Adenium obesum, Desert Rose belongs to Apocynaceae. One representative of Apocynaceae is Oleander.
I made many sketches, more than 100, of Desert Roses this year. Desert Rose is a good name. I never got tired as the shapes of not only the flowers but also the leaves and the stems (somehow awkwardly short) are unique and interesting to see. This may be good for Bonsai.
AAG