山东省特有植物的研究

STUDY ON THE ENDEMIC PLANTS FROM SHANDONG PROVINCE

本文对山东省特有植物的区系组成、地理分布和特有性质进行了初步研究，并绘制了特有植物分布图。７６种特有植物隶属于３２科５３属，其中蕨类植物５科８属１２种，被子植物２７科４５属６４种。这些特有植物多为新特有种而缺乏古特有种。特有植物的区系特征可以归纳为以下几点：（一）区系成分不算丰富；（二）地理分布极不均衡，有四个明显的特有现象中心，即昆嵛山，泰山、崂山和蒙山；（三）地理成分复杂。

Shandong province is situated in the eastern part of China. About 76 Species (including varieties and forms) of vascular plants are endemic to this province, among them 12 species belonging to & genera and 5 families are pteridophyte, and 64 species belonging to 45 genera and 27 families are angiosperm. Most of the endemic species are neoendemics,while very few ones are palaeoendemics.Based on a careful analysis, some fundamental characteristics of the endemic flora of Shandong can be summerized as follows:1. The floristic elements are relatively not rich, however, it is still showing that the flora of Shandong has a special respect of itself.2. The geographical distribution is fairly uneven. All the endemic plants are dispersed in the middle-south mountains and the eastern peninsula, while no endemic plant in western and northern parts of the province, such as Heze, Jining, Liaocheng, Dezhou, Huimen and Dongyin. Four centers of endemism are clear to be Mt. Kunyu, Mt. Tat, Mt. Lao and Mt. Mead.3. The geographical elements are complex.