日本产的尼泊尔老鹳草(Geranium nepalense)所含主要鞣质为牻牛儿素(geraniin)。其含量可随季节变化,以8月采收的叶片含量最高。这一点已有报道。本文作者为了进一步调查牻牛儿素在该植物体内分布的季节变化,对一年中12个月采收的不同部位的叶片分别做了含量测定(高压液相法)。结果表明:该植物个体中牻生儿素的含量,以茎顶端新生的 The main tannin contained in Japanese Geranium nepalense is geraniin. Its content can change with the season, with the highest content of leaves harvested in August. This has been reported. In order to further investigate the seasonal variation in the distribution of geranyl in the plant, the authors determined the contents of the leaves harvested at different sites in 12 months of the year (high pressure liquid phase method). The results showed that the content of twins in the individual of the plant was a new one at the top of the stem.