Wild sweet potato

Scientific name: White vine

Also known as mountain sweet potato, wild sweet potato, mountain grape seedling, white root, five-clawed vine, etc., it is a white plant of the grape family. Dried root tubers. Distributed in North China, Northeast China, East China, Central and South China, Shaanxi, Ningxia, Sichuan and other places. Excavate in spring and autumn, remove sediment and fine roots, cut into longitudinal or oblique slices, and dry in the sun. It can clear away heat and detoxify, eliminate carbuncle and dissipate stagnation.

Houttuynia cordata Thunb.

Houttuynia cordata Thunb. is a herbal medicine included in the Chinese Pharmacopoeia. The source of the herbal medicine is the dried aerial part of the Sagittaceae plant Houttuynia cordata Thunb. . In summer, when the stems and leaves are lush and the flowers and spikes are long, they are harvested, impurities are removed, and dried in the sun.