Abstract: Sichuan Province is rich in pteridophytes. Up to date, there are 52 families4),127 genera representing 763 species be recognized. This is only less than the number of pteridophytes in Yunnan Province, and comes in the second place among the provinces of China. Of the great number of species and complex systematical elements, the Dryo- pteridaceae, Athyriaccae and Polypodiaceae are most important and about 23%, 15%, l3% of the total number of species respectively. They constitute the main part of the flora, however, the advanced systematic position of them especially the Polypodiaceae is well knom.

Key words: phytogeographical, feature, polysticho-dryopteris flora, China