锦鸡儿属分析生物地理学的研究

将锦鸡儿属（Caragana）植物分布区划分成13个。在分支系统学基础上，进行了分布区的成分分析。以种类和系为分布特征，进行分布区的聚类分析和最小生成树分析。分布区分支图、表征图和最小生成树从不同方面表达了分布区的关系。锦鸡儿属的分布区被分成东亚和古地中海两大部分。其中分别来自这两部分的前苏联远东-我国东北与阿尔泰-萨彦岭分布区有密切关系。基于分布区分支图，属的分布区分别由这两个分布区衍生，同时结合属的种系发生关系，推断本属可能起源于东西伯利亚，时间为第三纪中新世末-上新世。生态适应上，分类群是由东部温带中生性类型向西部旱化和寒化方向发展的。

Chemical Constituents of the Essential Oil on Amomum tsao-ko from Yunnan Province

In this paper, 16 samples of Amomum tsao-ko Crevost et Lemairs from Yunnan Pronvince were studied. The essential oil yield of dried fruit, leaf and stem were determined. The essential oil yield of the dry fruit, leaf and stem are about 1.56%- 1.74%, and 0.085%- 0.11 %, respectively. 80 kinds of chemical constituents were identified from their essential oil, among them, 1,8-cineo1, 2-decenal, β-pinene, citral, geraniol, trans-2-undecenal are main constituents.