Mountain endive alias: bitter vegetable, knobbly lotus, small bitter wheat vegetable, bitter leaf seedling, defeat, bitter hemp vegetable, yellow rat grass, small bitter chicory, blood grass, trap blood dan, small bitter endive, bitter ding vegetable, bitter dish, light leaf endive, Yan'er clothes, defeat grass. It is the whole grass or root of mountain endive of Asteraceae. Harvested in early spring, washed, fresh or dried. Born in the mountains and wilderness, for field weeds. Distributed in northern, eastern and southern China.