Ilex is an evergreen tree and a national key protected plant. The crown is oval, the bark is smooth and gray-blue. Branchlets are light green. Leaves alternate, long oval, thin grass, sparse and shallow serrated edges, dark green and shiny surface. Flowers solitary, dioecious, arranged in cymes, with axillary branches; The flowers are purple and fragrant.

2.pine trees

Belongs to Pinaceae, Pinaceae. There are more than 80 kinds of pine trees in the world, which are mainly divided into Pinus massoniana, Pinus tabulaeformis, Pinus bungeana, Pinus armandii, Pinus tabulaeformis, Pinus densiflora, Pinus thunbergii and Pinus yunnanensis.

3. Maple

It belongs to Aceraceae of Sapindaceae and is a tall tree with a crown width of16m and a height of over 29m. The flowering period is April-May, and the fruiting period is 9-65438+1October. With the growth of tree age, the crown gradually opens and becomes round. Branches are brownish red to brown, with small holes, and winter branches are dark brown or gray.

4. cypress

This is a cypress tree, 35 meters high and DBH 2 meters high. Bark is light brownish gray, twigs are slender and drooping, green, old branches are cylindrical, dark brownish purple, male cones are oval or ovoid, cones are spherical, seeds are broadly obovate-rhombic or nearly round, and when mature, they are light brown and shiny.

5. Willow

Salix is mostly shrub, sparse tree, without terminal bud, sympodial branches, few stamens and insect-borne flowers, which indicates that Populus and Salix have evolved. This genus belongs to about 520 species in the world.