Bicolor Sesban, native to India, has unbelievable blooms that start completely black as buds and then open into black-red-and-orange multicolor flower.
It is a small, often multi-stemmed tree, growing to 12-15 ft high. Its leaves are pinnately compound.
The raceme has 2-20 pea-shaped flowers. Calyx and standard are purplish black, wings and keel partly purplish black or red;