Flora analysis of seed plants in Daxiong mountain of Hunan province

Abstract Based on field investigation and relevant information about Daxiong Mountain, we do the area types analysis of the seed plant. The results showed that: (1) There were1218 species of seed plants in this region, belong to 166 families and 668 genera, including 6 families, 11 genera, 14 species of gymnosperm and 160 families, 657 genera, 1204 species of angiosperms. (2) The composition of the seed plants in this region was highly dispersed and very complex. In the composition of the families, the number of small families was the most, which rate was 40.00%. However, the major families contains the largest number of plant species, the rate was 34.51%. In the composition of the genus, species focus on the small genera and the single genus that accounted for 37.14% and 51.43%. (3) The flora of seed plants in this region was complex. There were 267 genera, 46.05% genera of the total, in the tropical distribution. Followed by the temperate distribution of 171 genera, accounting for 28.24%. In addition, the Asian distribution including 168 genera, 27.71% of the total and the world distribution including 62 genera, accounting for 9.28% of the total.