Leucaena leucocephala: it is evergreen, without thorns. It is a kind of upright shrub, protected by small trees. The height of the plant is 6cm, and occasionally there are two pinnate compound leaves, with 4 to 8 pairs of pinnae and 10 to 15 pairs of leaflets. The shape is linear, rectangular and round, the tip is pointed, the base is wedge-shaped, the two sides of the midvein are asymmetric, and the color of the back is relatively light. The capitate inflorescence is axillary, shaped like a ball. In addition, its flowers are also very small, but many and very dense, the color of petals is white, relatively narrow. It usually grows in the tropics or subtropics.
Acacia: although it's also a shrub, it's very high. Its height can reach 2 to 4 meters. There are many thorns on the branch. The length of the thorns can reach 1 to 2 centimeters. There are 4 to 8 pairs of bipinnate compound leaves, each of which has a lot of leaflets, about 10 to 20 pairs. This is the same as Leucaena, and the leaflets are also linear long oval. It has a lot of seeds. The color is black. The petioles are relatively flat and can be arranged vertically, with many spines at the base. The flowers are also small, but the color is light yellow, and occasionally white. It smells very fragrant.
Leucaena: its tree shape is relatively beautiful. It can be pruned at will. It is very elegant and generous. It is often suitable for use in gardens or green walls of cities and towns. In addition, its flower, fruit and skin can be used as medicine, which can well eliminate swelling and pain, but also hemostasis. It is generally used to treat some cough, joint pain, and has a very good effect. It can also protect ecology and green barren mountains.
Acacia: it has many branches and thorns, so it is often used as a hedge. Its wood is also very hard, so it can be used as a more valuable equipment. In addition, its roots and pods contain something that can be used as a black dye, and as a medicine, it can also clear away heat. Besides, flowers are also very fragrant and can be distilled as flavors.
