A small tree or shrub. The bark is pale and mottled. It flakes off. The young branches can have spines at their tips. The leaves have 4 pairs of leaflets and a leaflet at the end. The leaflets are oval. They are 3 cm long by 2 cm wide. They are light green. They are unequal at the ends. The flowers are in long loose sprays. These are at the ends of branches. The flowers are yellow and have a sweet scent. The fruit is a small flattened pod. It is oval and 5 cm long by 3 cm wide. It is swollen over the single seed. There is a thick wing around it.