1. Different shapes

Leucaena leucocephala: it is evergreen without thorns. It is an upright shrub, protected by small trees. The height of the plant is 6 cm, and occasionally there are two pinnate compound leaves. There are generally 4 to 8 pairs of pinnae and 10 to 15 pairs of leaflets. The shape is linear, rectangular and round, the apex 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 and shaped like a ball. In addition, its flowers are also very small, but many and dense. The color of the petals is white and narrow. It usually grows in tropical or subtropical areas

Acacia: although it is also a shrub, it is very high, with a height of 2 to 4 meters. There are many thorns on the branches, and the length of the thorns can reach 1 to 2 cm. There are 4 to 8 pairs of double pinnate compound leaves, and each feather has many leaflets, about 10 to 20 pairs. This is the same as that of Leucaena leucocephala, and the leaflets are linear and long oval. It has many seeds and the color is black. The petioles are relatively flat and can be arranged vertically. There are many sharp spines at the base. Flowers are also relatively small, but the color is light yellow, occasionally white. It smells very fragrant

2. Different functions

Leucaena leucocephala: its tree shape is relatively beautiful and can be trimmed at will. It is very elegant and generous. It is often suitable for use in gardens or green fences in cities and towns. In addition, its flowers, fruits and skin can be used as medicine, which can well eliminate swelling and pain and stop bleeding. It is generally used to treat some cough and joint pain, which has a good effect. It can also protect the 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 more valuable equipment. In addition, its roots and pods contain things that can be used as black dyes and heat clearing when used as medicine. In addition, flowers are also very fragrant and can be extracted as flavors. p>