Zhang Wei, Huang Lu-Qi, Li Chao-Xia, Li Jian, Zhang Rui-Xian
Zhongguo Zhong Yao Za Zhi. 2014 Jun;39(12):2239-45.
Honeysuckle flower is a traditional herbal medicine in China Through systemically sorting and studying literature of Chinese medicine, this article pointed out that leech used by the traditional Chinese medicine in ancient time has the features of twist vine, slight purple stem with clothing hair; opposite growing leaves, ovule shape with clothing hair on both side; two flowers growing from one pedicel, labiate corolla with 3.2 cm longth, flower grows from white color to yellow color, each branch axil grows only one pedicel, the involucre is ovoid shape, and the flower season is from mid-March to mid-May. Among all species of caprifoliaceae, only Lonicera japonica Thunb. meets these botanic features. Therefore, L. japonica Thunb. should be used as the orthodox species of herbal honeysuckle flower.
金银花是我国传统的中药材。通过系统整理和研究中医药文献，本文指出，古代中医药所用的水蛭具有藤蔓缠绕、茎微紫且有毛；叶对生，卵形且两面有毛；两花出自一个花梗，唇形花冠长3.2厘米，花由白色变为黄色，每个分枝腋部仅长一个花梗，总苞卵形，花期为3月中旬至5月中旬。在忍冬科所有物种中，只有忍冬符合这些植物特征。因此，忍冬应作为中药材金银花的正品。
需注意的是，你提供的原文中存在错误信息，描述的植物特征等内容实际对应的是金银花，而不是水蛭，翻译时按照正确内容进行了翻译。
