Floristic analysis on seed plants of Taizhou in Zhejiang Province

The seed plants in Taizhou City are very rich.There are 1 892 species(including subspecies)of wild seed plants belonging to 150 families and 784 genera.Among which,Gymnosperms have 6 families,12 genera and 16 species while Angiosperms have 144 families,12 genera and 16 species.The dominant families are distinct and there are 45 families with more than 10 species,belonging to 526 genera and 1 453 species,which account for 67.09% and 76.80% in total genera and total species,respectively.The floristic history is centuries-old and the origin is ancient.707 genera belong to oligotypic genera and the smallest genera,which account for 90.18% in total genera.At the family level,the tropic type and subtropic type were dominant,the second is cosmopolitan type and the third is temperate type.At the genus level,the areal types can be divided into 14 kinds.The temperate type is dominant and there is also quite proportion of tropic type with tropic characteristics.The geographical components are multiform and widely related to the world.The element of endemic species to China has 14 genera,among which,20 species belong to the first national protection categories.