What is the moral symbol of Salix Salix?

Liu, homophonic "stay". The ancients often used "folding willow" to say goodbye, which showed the inseparable feelings of leaving people. The wind of "folding willow" was popular, especially in the Tang and Song Dynasties, so "folding willow" became another name for farewell.

Introduction of Salix psammophila:

Salix psammophila is a desert plant and one of the few plants that can grow in saline-alkali land. Its young branches are yellow, its leaves are linear or linear-lanceolate, its branches are clustered, it is not afraid of sand pressure, its root system is developed, and its germination is strong. Its natural enemy is Salix xylostella, which is born in the wetland near the river valley and distributed in Inner Mongolia, Hebei, Shanxi, Shaanxi, Gansu, Qinghai, Sichuan and other places. Salix psammophila is used as the main force to prevent sandstorms in the north, and it is one of the first choices of "Three North Shelterbelts".

Salix is a shrub or small tree, and its branchlets are fluffy when they are young, and then gradually smooth. The leaves are strip-shaped or strip-oblanceolate, 1.5-5 cm long and 3-7 mm wide, and the edges are rolled out. The upper part has sparse glandular teeth, and the lower part is nearly entire, with silky hairs at the beginning and hairless at the back, and the lower part is gray and silky. Petiole 1-3 mm long, villous.