Abstract: Epidermal characters of leaves, which include characteristics of stomata, trichomes and epidermal cells, of 8 species of climbing honeysuckle plants which are introduced successfully from abroad and domestic have been observed by the light microscope and scanning electronmicroscope.According to their cultivated characters in Beijing these years, we can find that there is a strongly relationship between the morphological and anatomical structures and their ecological adaptability.The leaves of the species which spread broadly and adapt different environment easily, have the epidermal characters such as the greater density of stomata, the reduction in epidermis cell size as well as trichomes covering or leathery face.Lonicera japonica, L.japonica var.chinensis, L. acuminata var.acuminata have strongly adaptability among 8 species.This research is helpful for the application of climbing honeysuckle plants in the northern China.

Key words: climbing honeysuckle plants, structure of leaf epidermis, ecology adaptation