I have most of the trees that I really like already on the model, but if I were to choose 3 more they would be:
Sealing wax palm, Crytostachys lakka
African milkwood tree, Sideroxylon inerme
Angela's trumpet, Euckinia longiflora
I have about 5 sealing wax palms on the diorama, but it would be nice to have a toy brand make them, they are very beautiful, the trunk and stems are bright red, giving it another common name, lipstick palm. I have plans to make both the milkwood and trumpet trees, I am collecting photos of the foliage and have made a few basic outlines for the trunk and branches.