Abstract: For pollination, plants show a high degree of adaptation. To expand the area to accept pollen, wind-pollinated flowering plants form a special structure to adapt to wind-spread pollen. We investigated the morphology of styles and pollen tube growth on styles (including stigmas) for 18 species of 6 genera in Betulaceae by scanning electron microscopy. Betulaceae have two-carpel (or rarely tri-carpel in Ostrya japonica and Carpinus monbeigiana) gynoecia, usually with cylindrical styles and not well-developed stigmas. Styles have elongate epidermal cells, arranged longitudinally and tightly; styles function as stigma to receive mature pollen grains and provide a suitable germination environment. Betulaceae have two types of styles: in one, epidermal cells have bubble or tubular papillae, and the pollen tube enters the style through papilla; in the other, epidermal cells have no papillae, and the pollen tube enters the style between the epidermal cells. Whether style epidermal cells can form papillae or not, the morphology or size of papillae and the binding mode of pollen and papilla differs by tribe, gender and genus. The style epidermal cells in Betulaceae could perform the function of a stigma, receiving pollen and providing locations and conditions for pollen germination. The papillae formed by style epidermal cells in Betulaceae have the same function as in basal angiosperms, an adaptation strategy for plants with wind pollination.