Study on Flora of Seed Plants from Dazhong Mountain in the South-central Yunnan Province

There are 749 species of seed plants in Dazhong Mountain, belonging to 396 genera and 137 families.Inside the flora, there are 33 cosmopolitan genera, accounting for 8.33% of the total.Excluding the cosmopolitan genera, there are 206 tropical genera that accounts for 56.75% of the total 148 temperate genera, which accounts for 40.77% of the total, and 9 genera endemic in China, which accounts for 2.48% of the total genera.It was concluded that this region is rich in plant species with plenty of ancient species and relict plants, and in which the dominant families and genera are prominent.The representative families of the flora are Lauraceae, Fagaceae and Theaceae.It was showed that the characteristics of the seed plant flora in Dazhong Mountain were of ancient genesis with complicated floristics, and there was a striking subtropical feature showed by the flora.