全世界大黄属植物共有60余种,迄今所知仅食用大黄Rheum rhaponticum一种可以食用,为欧美常食蔬菜之一,据报告有强致癌物质二羟基蒽酮。作者在河北省围场县调查时发现当地普遍生长的野生大黄有相当长的食用历史,近年开始栽培,产量甚丰。据《唐·新修本草》一书云:“幽并以北渐细,气力不如蜀中者。……其茎味酸,堪生啖,亦以解热,多食不利人”.所谓“幽并以北”实指晋、冀北部及内蒙南和东南地区;所谓“气力”即指泻下作用不如“川军”。从分布和效力来分析,所指必是波叶组大黄无 There are more than 60 species of rhubarb in the world. To date, it is known that only Rheum rhaponticum, a kind of edible rhubarb, can be eaten. It is one of the most commonly eaten vegetables in the United States and Europe. It is reported that there is a strong carcinogen dihydroxyfluorenone. When the authors surveyed in Weichang County of Hebei Province, they found that the wild rhubarb, which is commonly grown in the area, has a long edible history. In recent years, it has been cultivated and yields are very abundant. According to the book “Don’s Newly Revised Materia Medica,” the book says: “Since the north is gradually smaller and thinner, the strength is not as good as those in the middle of the earth. ... The stems are sour, and they are boring, but also antipyretic, and eat more unfavorable people.” The north of the secluded north and south of China is actually referring to the northern and southern parts of Inner Mongolia and southeastern China; the so-called “strength” refers to the role of diarrhea which is inferior to the “Chuanjun”. According to the analysis of distribution and effectiveness, the indicated