1, burdock is also known as barley, hawthorn, burdock and so on. It is a biennial woody plant of Arctium in Compositae. It has high use value and nutrients, and can be fried, boiled, eaten raw or processed into drinks. Burdock root is stout, fleshy and straight, with a length of15cm and a diameter of 2cm, with branches and roots. The stem is 2 meters high, thick, 2 cm in diameter at the top, generally purplish red or light dark purple, with most convex edges and inclined branches. Most of the stems and branches are covered with rare short mastoid hairs and long spider silk hairs, and are mixed with yellowish brown small glandular spots.

2. Most or very few flower heads of Arctium lappa are arranged at the top of stems and branches, which are loose or conical, and the flower heads are thick. The involucre is ovoid or ovoid with a diameter of 65438±0.5 ~ 2cm. The total bracts are double-layered, mostly triangular or fibrous, with a width of about 1mm, the middle layer is fibrous or strip-shaped, with a width of 1.5 ~ 3 mm, and all bracts are almost equal in length, with a cartilage hook at the top. The flowers are dark purple, the corolla is elongated by 65438 0.4 cm, the tubule is 8 mm long, the eaves are 6 mm long, there are no glandular spots outside, and the corolla lobes are about 2 mm long.