Abstract: The quantitative relationships of 14 taxa of Paris were calculated, using their content of steroidel saponins, with L. B. Thien, W. H. Heimermann, and R. T. Holman's fomula which was used in calculating the quantitative relationships of chemical components of plant. The result of the calculation is Rxy (the relationship index between each two species) . The relationship of a species to the group as a whole was calculated by summing the Rxy values for that species. Then a figure of quantitative relationship was drawed. ( Fig. 1) The result was the contents of steroidel saponins of P. cronquistii and P. japonica were very similar with 12 other species of Paris., the contents of steroidel sapo-nins of P. fargesii and P. bashanensis were very different from 12 species of Paris. The components of steroidel saponins of the two species were very parti-cular.

Key words: Paris

摘要： 重楼属植物是重要的药用植物。从1938年起，国内外科学家对它们的化学成分和药用价值已经进行了40多年的研究。我所从重楼属植物中分离鉴定了16个不同的甾体皂甙。本文利用高压液相色谱对重楼属植物甾体皂甙的定性和定量分析结果[1] 根据L．B. Thien，W．H．Heimermann，R．T．Holman植物化学成分间的数量关系计算公式[2],对14种重楼的三组甾体皂甙含量进行计算，得出这14种重楼化学成分之间的数量关系，并画出数量关系图。

关键词: 重楼属, 甾体皂甙, 数量关系图