One common feature is a plant that resembles a shrub with a height of 1.5 m stems of this plant will look stiff. Thorn is based on the stem. The leaves will look solid With sharp spines along the edges of leaves and leaf tip. It leaves the skin smooth texture stiff clay. The flower is a flower bouquet erect a purple, blue or white with flower petals four petals in the middle of the male flowers are pollen and pistil are.