A fragment describing the dragon catching Sophora japonica

The trunk is as thick as a bowl, brown, with rough bark and vertical cracks.

Branches bend like dragon claws, no wonder they are called Sophora japonica. The branches near the trunk are thicker and greener and thinner at the tail. The thin branches are covered with strings of leaves.

The leaves are oval, a little sharp on both sides and wide in the middle. The front color is darker and the back color is lighter. Look carefully, there are thin veins.

This flower is white, and its two petals are tilted up like an airplane. When the wind blows, the branches swing and the flowers move, as if greeting me.

Sophora japonica (scientific name: Sophora japonica) is a tree with a height of 25 meters; The bark is grayish brown with longitudinal cracks. The branches are green and hairless.

Sophora japonica is a bud variety of Sophora japonica, which is deciduous, light-loving, slightly shade-tolerant and can adapt to dry and cold climate. With beautiful crown and fragrant flowers, it is a street tree and an excellent nectar source plant; Flowers and pods are used as medicine, which have the functions of cooling and astringency, hemostasis and blood pressure reduction; Leaves and root bark have the effects of clearing away heat and toxic materials, and can be used to treat sores. Wood is used for building. As a result of different habitats or artificial propagation, this species has various forms and has produced many varieties and forms.

The pinnate compound leaves are as long as 25 cm; Leaf rachis is puberulent at first, and then becomes clean; The petiole is swollen at the base, wrapping the bud; Stipules vary in shape, sometimes oval, leaflike, sometimes linear or subulate, falling early; 4~7 pairs of leaflets, opposite or nearly alternate, papery, ovate-lanceolate or oval-oblong, 2.5~6 cm long and 1.5~3 cm wide, with a tapering apex and a small tip, a broad wedge-shaped or nearly round base, slightly inclined, grayish white below, initially sparsely pubescent and hairless; Stipules 2, subulate.

Panicle terminal, usually pyramidal, up to 30 cm long; Pedicel shorter than calyx; Bracteoles, shaped like stipules; Calyx shallow bell-shaped, about 4 mm long, calyx teeth 5, subequal, round or obtuse triangle, grayish white pubescent, calyx tube subglabrous; Corolla is white or light yellow, flag petal is nearly round, length and width are about 1 1mm, stalk is short, pulse is purple, apex is slightly notched, base is shallow heart-shaped, wing petal is oval, long 10mm, apex is round, base is oblique halberd-shaped, and there is no wrinkle, keel petal is wide and oval, similar to wing petal. Stamens are nearly separated and persistent; Ovary subglabrous.

Pods are beaded, 2.5~5 cm long or slightly longer, with a diameter of about 10 mm, with inconspicuous contraction between seeds, closely arranged, fleshy pericarp, and no cracking after maturity, 1~6 seeds; After drying, the seeds are oval, yellow-green, and dark brown. The flowering period is July-August, and the fruiting period is 8-65438+1October.

Like light, a little tolerant of shadows. Can adapt to dry and cold climate. Born in sandy loam with deep soil layer, moist and fertile soil and good drainage. Deep roots, developed roots, strong wind resistance, strong germination and long life. It can resist sulfur dioxide, hydrogen fluoride, chlorine and other toxic gases and smog.

Originally from China, it is widely cultivated in northern and southern provinces, especially in North China and Loess Plateau. Fushun, Tieling, Shenyang and their southern areas are introduced and planted, and they are cultivated all over the north of Guangzhou, but more in the south of the Yangtze River. Hebei, Beijing, Shandong and Jiangsu Shuyang can be seen everywhere.

It was introduced to Japan in Song Dynasty, to Europe from Japan in the middle of18th century, and then to America from Europe. Japan and Vietnam are also distributed, and North Korea is also wild. It was introduced from Europe and America.