发现有把锦葵科锦葵(Malva sinensis)伪充豆科黄芪(Astragalus mongholicus及A.membraceus)药用。二者来源、功效不同,今提供鉴别特征如下。黄芪:本品为圆柱形,向下略细,少有分枝,表面灰黄色,少数呈淡棕褐色,有纵皱纹或纵沟,有稀疏皮孔和极少数须根痕。质硬略韧,难折断。断面纤维性强,黄色,有细小裂隙和菊花心,老根中央枯朽。气 Malva sinensis was found to be medicinally used in the guise of Astragalus mongholicus and A. membraceus. The source and efficacy of the two are different. The authentication features are as follows. Astragalus: This product is cylindrical, slightly narrow down, few branches, the surface is grayish yellow, a few are light brown, there are longitudinal wrinkles or longitudinal grooves, there are sparse skin holes and very few roots traces. Hard and tough, hard to break. Cross-section fiber is strong, yellow, with small fissures and chrysanthemum heart, the old root is rotted. gas