Rainbow shower tree can grow to about 10 m tall. It has compound and alternate leaves, each with 6 to 10 pairs of oval leaflets.
The flowers appear in long hanging clusters and have 5 petals and a long, curved style. The petals are white, yellow and cream, to orange-red. The cultivar pictured here 'Queen's Hospital White' has unscented yellowish flowers, turning white. The species name commemorates Hawaii botanist Marie C. Neal.
(Neal,M.C. 1965. In Gardens of Hawaii.)
(Staff of the Liberty Hyde Bailey Hortorium. 1976. Hortus Third.)