Try www.pachypodium.org/
You may have to wait for the flowers to positively ID it. Some varieties are spectacular.
Ralph
I received the larger plant several years ago as a single or double bulblet. It has never bloomed, just adds new bulbs. Hope I don't have to wait much longer.
I queried Pachypodium.net re the plant I've been trying to identify and then e-mailed the address referred to in that site. The return message told me that the plant is not a Pachypodium so I'm back to where I started, asking for help in identifying the plant.
The smaller plant is a bulblet from the larger. I've had the larger plant for several years and it has not bloomed.