Shrub or a small tree 2-4 m tall, in nods there are thorns. Leaves are even pinnate, individual leaves are obtuse with awn shaped point. The front side is dark green, the underside is lighter. The leaves are hairy in young age, later are hairless. The fruit is thin, brown legume. At the top they are spiky, on the basis with calyx. If matured cracks and turn around its longitudinal axis. Shoots: Shoots are thin, hairy, later hairless, smooth, gray-green, with stripping bark. They are 2 fine thorns located in nods. Natural range: Eastern Asia; in our area introduced.