Samanea saman is a large tropical tree growing as much as 60 m tall, with rough wrinkled bark and developing a symmetrical broad umbrella shaped crown about 80 m wide, making this species a beautiful choice for a shade tree.The evergreen leaves are alternate, bipinnate, 25–40 cm long, with 2–6 pairs of pinnae, each of which bears 6–16 paired stalkless leaflets, with a glandular dot between each pair. Flowers are produced near the end of twigs in clusters on a green hairy stalk with many small tubular pinkish-green flowers. The fruits are flat seed pods, black, 20–30 cm long, containing several oblong reddish-brown seeds about one cm long.
(Duke, James A. 1983. Handbook of Energy Crops.)