The tuberous roots of wild Polygonum multiflorum Thunb are spindle-shaped or massive, generally slightly curved. The length is 5- 15cm and the diameter is 4- 10cm. The surface is reddish brown or reddish brown, uneven, with irregular longitudinal grooves and dense wrinkles, and horizontal lenticels and fine root marks.
Wild Polygonum multiflorum Thunb is hard and not easy to break. The section is yellow-brown or reddish-brown, powdery, and the abnormal vascular bundles with round epidermis are annularly arranged, forming brocade, with large wood in the center and some wood cores. Slight gas, slightly bitter and slightly sweet taste. It is best to be solid in weight and quality and full of powder.
Extended data
There is a legend that taking Polygonum multiflorum Thunb can prolong life.
According to legend, a long time ago, in Zhoushunnan county, there was a young man named Tianer, who was frail, scrawny and dizzy since childhood, so he went out to look for folk herbs to cure diseases.
One day, when I walked to a temple, I fainted from hunger. In the dim light, I saw two vines more than three feet long, crossing together for a long time. Soon after they dispersed, they crossed again, and so on. Tian Er was surprised to see this scene, and found himself lying under the vines on the roadside, so he curiously dug out the roots under the vines. These roots vary in shape, size, thickness and length.
I went back to the temple and asked the scholar, I don't know what kind of plant it is. One day, I met an old man with long hair in the mountains. He walks fast, with bright ears and black hair. Tian Er asked the old man what it was and told him his dream.
The old man said, it's strange that vines cross, but it seems to have auspicious signs. This is a blessing from heaven and a panacea for you. it wont hurt you to try it
Tian Er thinks it makes sense and says thank you for your advice. He looked up and found that the old man was gone, and he couldn't help sweating. When I went back to dry this root and grind it into powder, I ate it every day for a while. Tianer feels stronger and stronger, and her old illness has healed. After taking it for more than a year, Tianer's beard and hair turned black, and his face was moist and rosy, as if he were rejuvenated. She married a young woman in her sixties and gave birth to a child.
Baidu Encyclopedia-Polygonum multiflorum Thunb (Plants)