紫背天葵（Ｇｙｎｕｒａ ｂｉｃｏｌｏｒ ＤＣ．）别名紫背菜、血皮菜、观音菜、两色三七草等，为菊科三七草属多年生草本植物。原产于我国南部，在四川、广东、广西、福建、云南、浙江、台湾等地均有分布。近年来在华北、东北地区作为特种蔬菜引入栽培，已逐渐为北方人民所接 Gynura bicolor DC. Alias ​​purple back dish, blood vegetables, Avalokiteshvara, two color notoginseng grass, asynchrony of Asteraceae genus perennial herb. Originated in southern China, in Sichuan, Guangdong, Guangxi, Fujian, Yunnan, Zhejiang, Taiwan and other places are distributed. In recent years in North China and Northeast China as a special vegetable introduced cultivation, has gradually been accepted by people in the north