Adenium swazicum with pointy petals

The leaves around this Adenium swazicum flower are quite long. The folding along the sunken leaf midrib is consistent. Some of the leaf-tips are not pointed here, but rounded.

So are the petal tips, broad and attenuating to tiny protruding points. The flower in picture is darker in the throat, some dark purplish lines from inside the tube stop abruptly just outside the corolla mouth (Smith and Crouch, 2009; Onderstall, 1984).