广西石灰岩特有珍稀药用植物类群的基本特征研究

Basic characteristics of the endemic and rare medical plants in limestone mountains of Guangxi

报道广西石灰岩特有珍稀药用植物的环境背景和类群组成,重点分析了该植物类群的基本特征。由于岩溶地区特殊的自然环境,广西石灰岩特有珍稀药用植物达133种,隶属于53科81属,区系成分复杂多样,热带性质明显,古老和进化成分并存,单种属、寡种属多,喜钙植物及近新分类群所占比重较大。

This paper reports environment background and flora of the endemic and rare limestone medical plants of Guangxi, analyzs emphatically the flora characteristics. The result shows this flora is conspicuous of the tropics nature. The elements of this flora are complex and varied, and show obviously specialization from primitive type to higher type. There are many single-species and rarespecies genera. Influences of the species that accustomed to calcium are quite strong upon the flora. New classified groups consist a larger proportion of the sum.