关键词: 植物区系, 种子植物, 祁门地区, 安徽

Abstract: According to investigation, there are 1 822 wild species(including subspecies, varieties, forms) in 731 genera of 147 families in Qimen region, located in the south of Anhui Province. The spermatophyta flora of Qimen is rich, and 17 of these species are the rare and endangered plants protected by law in China. Lardizabalaceae, Actinidiaceae, Hamamelidaceae, Ulmaceae, and so on are the dominant families which are subtropical and temperate-distributed. Based on their geographical distribution, 147 families are classified into 11 areal-types among which Pan-tropical element is dominant (51.9%). 731 genera are classified into 14 areal-types among which north temperate element is dominant (20.5%), and the temperate elements make up 55.6%. 1 822 species are classified into 13 areal-types among which Endemic to China element is dominant (50.8%), and the temperate elements make up 33.1%. Therefore, this flora is temperate in nature, and the geographical elements are complex. In addition, the origin of Qimen flora is ancient; its endemism and vicarious phenomenon are relatively marked.

Key words: flora, spermatophyta, Qimen region, Anhui Province