对辽东木忽木及剌五加叶、人参叶进行了性状、显微鉴定比较研究，确定了它们之间的区别点。发现了辽东木忽木叶轴的维管束分离，多数排列呈两个圆心环状，外层维管束木质部在内方，韧皮部在外方；内层维管束木质部在外方，韧皮部在内方。辽东木忽木叶小叶片下表皮细胞壁的结点处均有一个单细胞腺毛，呈规则的排列方式 The morphological and microscopic identification and comparison of the leaves of L. dongtungensis, G. quinquefolium and G. quinquefolius were studied, and the differences between them were determined. The vascular bundles of the leaves of L. chinensis were found to be detached. Most of the vascular bundles were arranged in two circular rings. The xylem of the outer vascular bundle was in the inner part and the phloem was on the outer side; the xylem of the inner vascular bundle was in the outer part and the phloem was in the inner part. There is a single-celled glandular hair at the junctions of the lower epidermis cell wall of the leaves of L. dongtungensis, which is in a regular arrangement.