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八楞木的鉴别方法与药材质量评价

时 2026-09-09 23:09:22源 鉴别方法撰 中国国际医疗服务系统
八楞木药材的根呈纺锤形。茎呈类圆柱形,长可达1米,直径0.5~0.8厘米。外表面灰褐色,有多条纵棱,节明显,呈螺旋状排列,节间距2~6厘米。质脆易断,断面髓部宽广,呈类白色或黄白色,中心有一小孔洞。叶多破碎,完整者展平后,基生叶和下部叶有柄,呈矩圆形或椭圆形,羽状分裂,裂片7~8对,上部叶较小,呈椭圆形或披针形,分裂或全缘。头状花序密集成伞房状,总苞筒状,多层,全为管状花。气微,味微苦。以叶多、色绿、质嫩者为佳。原植物风毛菊为二年生草本,高50~150厘米,根纺锤状,茎直立粗壮,纵棱显著。
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