Studies on the Pteridophyte Flora of Ruoliaoxian Nature Reserve in Zhejiang Province

The pteridophyte flora in Ruoliaoxian Nature Reserve are composed of 153 species(including varieties and subspecise),69 genera,38 families.Comparing with nine florae,the integratiye coefficient of this flora(0.161) is the fifth.The representative families are Dryopteridaceae,Polypodiaceae,Thelypteridaceae,Athyriaceae,Aspleniaceae and Selaginellaceae.The main genera are Dryopteris,Asplenium,Selaginella,Arachniodes,Pteris and Allantodia.The main genera's distribution types are pantropical ones,while the species distribution types is belong to the east Asia one and represented to the feature of subtropics transition to warm temperated area-type.In the ten relevant mountainous regions,the floristic elements of this flora are similar to those of Mt.Jiulongshan,Mt.Gutianshan,Mt.Tianmushan,Mt.Lushan and Mt.Wuyishan,but this flora has the closest relationship with that of Mt.Jiulongshan and Mt.Gutianshan.