Corolla is white or yellowish, the flag petal is nearly round, the stalk is short, the pulse is purple, the apex is slightly notched, the base is shallow heart-shaped, the wing petal is oval, the apex is round, the base is oblique halberd-shaped, without wrinkles, and the keel petal is wide and oval, as long as the wing petal and as wide as 6 mm; Stamens are nearly separated and persistent; Ovary subglabrous.
Sophora japonica has good ornamental value. As soon as the flowering period arrives, clusters of white Sophora japonica flowers are covered with branches, and the air is filled with a faint and elegant fragrance, which is refreshing. Originated in northern China, especially the Loess Plateau, Northeast China and North China Plain, it is widely cultivated in northern and southern China.
Extended data:
Sophora japonica is a characteristic tree species commonly used in gardens. It has dense branches and leaves, and the shade is like a cover. Suitable as a shade tree in the courtyard, it is mostly used as a street tree in northern China. It is also suitable for planting in parks, buildings, neighborhood communities and lawns.
Sophora japonica should be planted in front of the door or in rows, or alone beside pavilions and rocks. It can also be used for greening in industrial and mining areas. Flowers can be seen in summer and autumn, which is an excellent nectar source plant. Buds can be used as dyes, pulp can be used as medicine, and seeds can be used as feed.
It is also a windbreak and sand-fixing tree species, which can be used as both timber and economic forest. It is a good shade tree and street tree species in urban and rural areas, and has strong resistance to toxic gases such as sulfur dioxide and chlorine. Sophora japonica can also be used as a tree species choice for mixed forest.