Flamboyan tree

The flowers on that tree are very beautiful, they remind me a little of honeysuckle.

Can't help with any native flowers, but according to the Lonely Planet guidebook, the variety of Jacaranda which grows in DR isn't found anywhere else. They also report that of over 5,000 plant species documented in DR, more than a third of them appear on Hispaniola an nowhere else.

You might try this

See if this reaches Dr. Richard Lowden at PUCMM in Santiago
rlowden@pucmmsti.edu.do

He is the national resident expert on Dominican flora, and if he can, I am sure he would point you in the right direction.

HB