Analysis of Pteridophytes Flora in Bijie National Forest Park

Through field survey,collating herbarium specimens,and reviewing historical documents,the floristic geographical features of ferns in Bijie National Forest Park were preliminarily investigated. The results showed that:there are 98 species belonging to 47genera of 27 families. The dominant families are Dryopteridaceae,Athyriaceae and Polypodiaceae and the dominant genus are Dryopteris,Selaginella and Polystichum. The areal-types of families and genera are tropic elements. While the areal-types of species are sub-tropic elements,and the eastern Asia is the main one. It was indicated that Pteridophyte of Bijie National Forest Park is based on pantropical and North temperate.