Floristic Study on Seed Plants of Xianju County in Zhejiang Province

According to preliminary statistics,there are 1 347 species(including subspecies) of wild seed plants in Xianju County,Zhejiang Province,belonging to 142 families and 616 genera,among which gymnosperms have 5 families,10 genera and 14 species,and angiosperms have 137 families,606 genera and 1 333 species.The dominant families are distinct and there are 18 families with more than 20 species.They account for 56.01% in total genera and 59.76% in total species,respectively although only 12.68% in total families.The floristic composition is complex.There are 562 genera accounting for 91.23% in total genera,which are the oligotypic and monotypic ones with less than 5 species.At the family level,the temperate type are dominant and account for 53.08%,while a considerable proportion of tropic type account for 44.57%.13 genera are Chinese endemic ones,accounting for 2.36%,among which 14 species belong to the first national protection categories.