Quercus (also known as Quercus, commonly known as oak, oak or oak) is a genus of Fagaceae. There are 6 species of Quercus, of which 45 are from subgenus Quercus and 15 are subgenus Quercus Cyclobalanopsis. They are distributed in the northern hemisphere, mainly in North America, and their Chinese names are oak trees, which are often confused with "rubber trees" in tropical areas, so their Chinese names are not so accurate, and Quercus is also distributed in tropical rainforests.

The oak tree is graceful, the crown is tower-shaped, the height can reach 24 meters, and the growth rate is medium. The crown is 1 meters, the leaf shape is unique, the new leaves are bright red, the mature leaves are dark green and shiny, and they turn orange-red in September, and the defoliation period is late.

Oak is the largest flowering plant in the world; The life span is relatively long, and some of them are as long as 4 years old. The fruit is nuts, one end is hairy and the other end is bare. It looks good and delicious, and it is the first-class food for fun animals such as squirrels.

the growth of oak trees in India can be as high as 2 meters, and in tropical forests, some trees can be as high as 3 meters. The terminal leaf buds of oak trees are covered by sharp, pink stipules, which will fall off when the leaves expand. The whole plant contains white sticky milk. Stipules and milk are the distinguishing features of all Ficus trees, including Indian oak trees. In addition, the Indian oak tree has long and spreading branches and air roots hanging from the trunk and big branches, which are its distinguishing characteristics.

Oak is the largest flowering plant in the world, with pure white flowers and reddish pistils. The life span is relatively long, and some of them are as long as 4 years old. They all have the same characteristics, the leaves are bigger than the palms, and like hands, they stretch out a few thick fingers.