中国蕨类植物区系的初步研究

A PRELIMINARY STUDY ON THE FERNS FLORA IN CHINA

对中国蕨类植物区系组成和科属的地理成分进行了统计分析，结果表明：中国蕨类植物区系具有区系成分丰富、起源古老、区系联系广泛、热带性质显著以及特有现象不明显的特点。

This paper deals with the ferns flora of China.Based on statistics and analysis,the results show that:(1) The floristic elements are relatively rich,which are about 3000 species belonging to 63 families and 228 genera.Some families and genera are mainly distributed in China.(2) There are 9 families and 87 genera of monotypic and oligotypic in the flora,which make up respectively 14.29% and 38.15% of total.(3) All the families and genera can be classified into 9 and 14 areal types,mainly were composed of the Pantropic (56.52% and 24.56%) and the Tropical Asia (15.21% and 27.39%).(4) The families and genera of tropical areal types account for 86.96% and 68.94% respectively,taking a predominated position,which shows that the ferns flora of China is of chiefly tropical nature.(5) Endemism is not remarkable.No families,only genera are of endemic in China.