又叫桃八七。为小檗科植物鬼臼的干燥根。根茎呈不规则块状,上端可见凹陷的茎痕。根丛生于根茎下,呈圆柱形,长6～12厘米,直径0.2～0.3厘米。表面棕褐色或淡棕黄色,有细纵皱纹及须根痕。质硬而脆,易析断,断面粉性,白色,木部黄色。气微,味苦微辛,有毒。有祛风湿、利气活血、止痛、止咳的功效。 Also known as peach eight seven. The Berberidaceae podophytic dry roots. Rhizome irregular block, the upper visible hollow stem marks. Roots were born under the rhizome, cylindrical, 6 to 12 cm long, 0.2 to 0.3 cm in diameter. Surface tan or light brown, fine vertical wrinkles and fibrous root marks. Hard and brittle, easy to break, cross-section powder, white, wood yellow. Gas micro, bitter micro-Xin, toxic. There are rheumatism, Qi and blood circulation, painkillers, cough effect.