semi-evergreen or deciduous, unarmed trees. Leaves bipinnately compound,
leaflets small, numerous, opposite. Inflorescence axillary or terminal, simple
racemose or panicled. Flowers showy, hermaphrodite. Calyx deeply 5-lobed.
Petals 5, yellow, more or less equal. Stamens 10, free, filaments thickened and
pilose at the base. Ovary sessile or substipitate, 3-8 ovuled. Fruit a pod,
compressed with a firm wing-like extension on each suture, 1-6 seeded. Seeds