What season is dandelion and where does it usually grow?

Dandelion is a plant from April to 10, which generally grows in Heilongjiang, Jilin, Liaoning, Inner Mongolia, Hebei, Shanxi, Shaanxi, Gansu, Qinghai, Shandong, Jiangsu, Anhui, Zhejiang, northern Fujian, Taiwan Province, Henan, Hubei, Hunan, northern Guangdong, Sichuan, Guizhou, Yunnan and other provinces. Widely distributed in hillside grasslands, roadsides, fields and river beaches in middle and low altitude areas. North Korea, Mongolia and Russia are also distributed.

Dandelion is a perennial herb of the original plant. The roots are cylindrical, dark brown and stout. The leaves are obovate-lanceolate, obovate-lanceolate or oblong-lanceolate, with a length of 4-20cm and a width of 65438 0-5cm. The apex is blunt or sharp, and the edge sometimes has wavy teeth or pinnately parted, and sometimes it has pinnately parted or pinnately parted on the big head. The top lobe is large, triangular or triangular-halberd, whole or dentate, with 3-5 lobes on each side.

Scape 1 to several, equal or slightly longer, high 10-25 cm, purple-red upper part, densely covered with spider silk white villous; The head is about 30-40mm in diameter; Involucre bell-shaped, long 12- 14 mm, light green; The involucral bracts have 2-3 layers, and the outer involucral bracts are ovate-lanceolate or lanceolate with a length of 8 8- 10/0mm and a width of1-2mm. The membranous edge is wide, the base is light green, the upper part is purplish red, and the top is thickened or has a small to medium angle protrusion. The inner involucral bract is linear-lanceolate, with a length of 10- 16 mm, a width of 2-3 mm, a purplish red tip and a small angular protrusion; The tongue-shaped flower is yellow, with a tongue length of about 8 mm and a width of 1.5 mm. There are purple stripes on the back of the marginal tongue, and the anthers and stigma are dark green.

Achenes are obovate-lanceolate, dark brown, about 4-5 mm long and 1- 1.5 mm wide, with thorns on the upper part and rows of nodules on the lower part. The tip gradually shrinks into a conical shape to a cylindrical beak base, with a length of about 1 mm and a beak length of 6- 10 mm, which is slender. The crown hair is white and about 6 mm long. The flowering period is April-September, and the fruiting period is May-65438+1October. Dandelion is a perennial herb of Compositae. A flower head with white crown hairs on its seeds, which floats to a new place with the wind after flowering and breeds new life.

The root is slightly conical, curved, 4 ~ 10 cm long, with brown shriveled surface, brown or yellow-white hairs on the root crown, or has fallen off. Leaves shrink into blocks or curly strips. The appearance is greenish brown or dark grayish green, and the main veins on the back of the leaves are obvious. Sometimes there are incomplete flower heads. Slight breath and bitter taste. More leaves, grayish green, complete roots and no impurities are preferred.