Ferns Flora in Lishui Mountains in Zhejiang Province

Based on investigation and statistical analyses,the Pteridophyte flora of Lishui mountain in Zhejiang Province is studied.Pteridophyte flora is abundant.There are 325species(including varieties)of 92 genera of Pteridophytes belonging to 42families. The dominant families are Dryopteridaceae,Polypodiaceae,Athyriaceae,Thelypteridaceae and Aspleniaceae;The dominant genera are Dryopteris,Arachniodes,Asplenium,Athyrium,Selaginella. The flora origin traces back early, many of whose families,genera and relic species are ancientry,and the flora elements are complicated coming from varieties of geographical types.The geographical distribution has relations with the other parts in the formation in the world.