The Colvillea racemosa is an endangered species from Madagascar, and is very closely related to the Royal Poinciana (Delonix regia). The trees are usually very difficult to tell apart until they bloom in the late summer, early fall. Unlike the Royal poinciana, it is a moderate grower. It has a low salt tolerance, and moderate drought tolerance. Colville’s glory reaches heights of 49ft, and can be found in zones 10-12.