Through pharmacognostical identification, species study, microscopic identification study, it has been found that the Clematis obscura Maxim.

• 对威灵仙、棉团铁线莲、东北铁线莲、秦岭铁线莲、灵仙苗、柱果铁线莲的原植物形态、药材性状、显微构造、粉末特征进行了对比研究，对威灵仙、东北铁线莲、秦岭铁线莲、柱果铁线莲的叶表皮细胞进行了显微观察及叶表面电镜扫描比较研究。