This wild vegetable is called Bidens bipinnata, which belongs to the genus Panicum in Compositae. Born in roadside wasteland, hillside and field at an altitude of 50-3 100 meters. It is distributed at home and abroad. Alias: Euonymus japonicus (Herbal Collection), Euonymus japonicus (Fujian Folk Herbal Medicine), Euonymus japonicus (Southern Jiangsu Seed Plant), Euonymus japonicus (Jiangsu Botanical Medicine), Pelargonium japonicum, Euonymus japonicus (journal of traditional chinese medicine, Fujian), bean dregs, Pelargonium japonicum (Patriotic Health Campaign), Caulis Sargassum, Walking with People (Quanzhou Herbal Medicine).

Bidens bipinnata has a special smell, so pigs, cattle and sheep don't eat it raw, but its fruit will stick to the fur of cattle, sheep and other animals because of its barbs, spread seeds and stick to people's clothes.