Abstract: The mid-montane humid evergreen broad-leaved forest is the most characteristic type of vegetation in the altitudinal zone of the Mt. Wuliangshan. Based on the analysis of the disposi- tion in vertical structure of 231 dominant and frequent species in the forest, it can be shown that there only are Tropical Asia, Sino-Himalayan and Chinese endemic elements penetrating all the synusiae from the canopy to the field layer, including A, B tree layers, shrub layer and so on. It is probably shown that it is floristically subtropical in the forest rather than temperate according to a thorough analysis of the distributions of these Chinese endemic species. Although there is similari-ty in many respects between this forest and the similar types of vegetation in Yunnan, there is roughly a set of species dominant in every mountain, they can be distinguished in the light of dif-ferent trees of Lithocarpus and there are various compositions of other main companions and companions between them.

Key words: Mt. Wuliangshan, Humind evergreen broad-leaved forest, Flora