This is a tree called "Thong Tonnam". Classed as 1st generation Thai Arabicum.
It is a tree I acquired from Dino Adenium in Thailand.
Rick
"Many times a day I realize how much my own outer and inner life is built upon the labors of my fellow men, both living and dead, and how earnestly I must exert myself in order to give in return as much as I received"
