A self clinging deciduous climbing hydrangea … White, lace-cap flowers. Tiny leaves smaller than general species Petiolaris … Will climb through tree branches or on a wall or left too grow into a bush. Brookside is a particularly small leaved form and not as vigorous … Family:Hydrangeaceae Endemic species woodlands of Japan, the Korean peninsula, and on Sakhalin island of easternmost Siberia in the Russian Far East