牵牛子为旋花科植物裂叶牵牛Pharbifis nil(L.)choisp或圆叶牵牛pharbitis purpurea(L.)Voight的干燥成熟种子,用于泻水驱虫.最近在药材市场发现以蕹菜子Ipomoeareptans(L.)Poir.混充牵牛子使用,两者虽同为旋花科植物,但其种不相同,不能混用,现将蕹菜子与牵牛子的鉴别要点报告如下: 牵牛子:种子呈三凌状卵形,约1/6圆球状,长 The yams are the dry mature seeds of the convolvulaceae plant Pharbifis nil (L.) choisp or the genus Pharbitis purpurea (L.) Voight of the convolvulaceae plant and are used for diarrhea to repel insects. Recently, the leek was found in the medicinal market. Ipomoeareptans (L.) Poir is used as a hybrid propolis, although both species are convolvulaceae plants, but their species are not the same and can not be mixed. Now, the distinguishing points of Amaranthus communis and Pinus taurinii are reported as follows: Oval-shaped, approximately 1/6 spherical, long