花旗竿属(Dontostemon)植物的区系地理成分及其生态地理分布规律的分析

An Analysis of the Floristic Geographical Elements and the Laws of Ecological Geographical Distribution of the Genus Dontostemon

依据植物标本及有关文献资料，绘制了花旗竿属各个种的分布区图，从而确定了每个种的区系地理成分和该属的多度中心。

The areal map of every species of Dontostemon has been drawn according to the specimens collected in different provinces and related literatures.On the basis of the areal,the floristic geographical elements of every species and abundance centeris defined,and research further the laws of ecological geographical distribution of Dontostemon.