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 is sometimes wavy or pinnately parted, sometimes pinnately parted or pinnately parted, and the top lobe is large, triangular or triangular, whole or dentate.

There are 3-5 lobes on each side, which are triangular or triangular-lanceolate, usually toothed, flat or inverted, with small teeth sandwiched between the lobes, and the base gradually narrows into a petiole. The petiole and main vein are often reddish purple, sparsely white or almost hairless, like spider silk.

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 are 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. 2n=24，32 .

Extended data

Dandelion is a perennial perennial flower, which can be planted for many years at a time. With the increase of growth years, the ornamental effect will be better. Dandelion has strong drought resistance, waterlogging resistance and barren resistance, and low planting management cost, which meets the development requirements of conservation-oriented gardens. Strong vitality and strong resistance.

From the wild state of wilderness to the artificial planting state of urban park green space, it can adapt to completely different ecological environment without domestication, will not degenerate, bloom earlier and enjoy a long period.

Baidu encyclopedia-dandelion