1, oak and oak are not actually a plant. Without careful information and comparison, it is generally difficult to distinguish oak from oak, because both the trunk of the tree itself and the fruit of the plant itself are very similar, and sometimes they look the same. Although they have the same tree species attributes, they are essentially different. Next, I will pay close attention to oak and oak.

2. Quercus, a general term for FAGACEAE plants, including species of Quercus, Cyclobalanopsis and Cladosporium, usually referring to Quercus plants rather than specific tree species. There are 6 15 species of Quercus, of which 450 species are from Quercus subgenus, and 188 is Quercus subgenus. Its fruit is called acorn, and its wood is generally called oak. Oak is the largest flowering plant in the world; Life is very long, it has a life span of 400 years.

3, deciduous or evergreen trees, up to 25 to 30 meters. The bark is dark grayish brown and slightly smooth. Branchlets brown and glabrous. Winter buds are ovoid, 3-5 mm long, hairless, with dark brown bud scales, mostly covered by tiles. The leaves are oval or oval, with a length of 10-20cm and a width of 7- 10cm. Taper tip, wedge-shaped base, 5-7 pinnate lobes on each side, fine teeth, dark green leaves, light green back, hairless or tufted veins. Petiole 2.5-5 cm long, glabrous when old.

4. Male inflorescence and leaves are open at the same time, and several flowers are clustered; Female flowers are solitary or have 2-3 flowers on the total stem about 1 cm long. The shell bucket is cup-shaped, with the cover nut 1/4- 1/3, the diameter1.5-1.8cm and the height1-1.2cm; Bracteoles triangular, closely imbricate, glabrous and shiny. Nuts are oblong, about 65438±0.5cm in diameter, 2-2.5cm in height, light brown, covered with thin fluff and gradually falling off; The top is round and has a small column seat; Fruit navel flat or slightly concave. The flowering period is from April to May, and the fruiting period is September of the following year. Native to America, this species is resistant to water and humidity. Nuts contain starch 46. 1%, tannin 10.6%, oil 12.6% and protein 7.4%.

5. Oak belongs to FAGACEAE and Quercus in botanical classification. The trunk is grotesque, vigorous and powerful, and the tree is beautiful and colorful, flourishing, resistant to pruning and easy to shape. After being shaped by the pull ring, the crown is like a canopy, with diverse shapes and unique charm. It is an excellent tree species in garden buildings and courtyard villas.

6. Oaks are deciduous or evergreen trees, and a few are shrubs. Up to 25 meters. The bark is dark grayish brown, slightly smooth, some curved, some inclined to the downwind, rough, and the branchlets are brown and hairless. Generally, tree trunks are black. The leaf margin is serrated, and the whole leaves are few. The leaves will turn reddish brown before they fall in autumn, which is very beautiful from a distance. The catkin of the male flower droops, and the female flower is solitary in the involucre. The nut is solitary, the inner wall of the pericarp is hairless, and the undeveloped ovule is located outside the base of the seed.

7. So there is little difference between oak and oak itself, so there is no need to subdivide it. Modern people will also synthesize them into the same plant, so the difference between them can be ignored. Their fruit is nuts, one end is hairy, and the other end is really bare. It is not only beautiful, but also a good food for animals such as squirrels. It is found that an oak tree in California, USA, has lived for at least10.3 million years and is the oldest known creature in the world. Oaks also have long-lived varieties.