METHODS Pharmacognosy routine methods such as freehand section,paraffin section and surface slice were used to observe the microscopic characters of the leaves and stems of Rhizoma Chuanxiong.

• 方法采用显微常规鉴定方法徒手切片、石蜡切片、表面制片。使用显微描绘目镜绘制组织图,并计算叶片栅表比、脉岛数及下表面气孔指数。