Koi3300:

With the different sizes of the flowers and their coloration, I would think that you have an adenium with multiple different flat grafts that look like they are all coming from one main graft. I have seen a number of plants in bloom here in the USA that have similar appearances and they all had multiple grafts.

jjbadenium

I misunderstood. I got the impression that Koi was speaking of one particular flower starting off with the dark edge and fading in time to the pale pink with white border from the same scion grafted?

Possibly Koi will confirm.
Rick

Hi Rick, you are absolutely right, it is grafted from only one scion and no other, the colour changes faded with time before it wither.
Koi