中国夹竹桃目的形态演化趋势及其进化系统

本文探讨了中国夹竹桃目主要器官分类性状的进化趋势,发现了中国夹竹桃目有关花萼、花冠、副花冠、雄蕊、花粉、子房和果实等分类性状密切关系和演化的规律性(图1),从而在作者参考蒋英教授工作成就的基础上,提出了中国夹竹桃目各分类群的进化系统(图2)。

ON THE TRENDS OF MORPHOLOGICAL DIFFERENTIATION AND EVOLUTIONARY SYSTEM IN CHINESE APOCYNALES

The evolutionary trends of the main organs ( e. g. calyx , corolla, corona, stamen, pollen, ovary and fruit etc. ) as a taxonomic character in Chinese Apocynales is discussed by comparison, According to these comparative results ( Fig. 1 ) and relationships between tribes and genera, the author propounded a evolutionary system of the taxa in this order on the basis of Tsiang's works ( Fig. 2 ) .