Abstract: Observed in this paper are the leaf epidermis and stomatal character of A. potaninii at different habitats, with effect of different altitude on the blade ecological adaptation of A. potaninii being compared.Studied results indicated:There are lots of epidermal hair in blade surface of A. potaninii, the cuticle of the leaf epidermis was usually identically striated, granular and scaly;Stomatal complex of A. potaninii is irregular type, stomatal guard cell cuticle of A. potaninii is quite thickness, stomatal opening is small, density and size of stomata of A. potaninii is a inverse ratio, with altitude increase, size of stomata of A. potaninii decrease, and density of stomata rise. The morphological characteristics demonstrate that A. potaninii has showed strong of drought resistant and adaptive ability for different altitude.

Key words: A. potaninii, leaf epidermis, stomatal character, altitude