Japanese hydrangea vine, Schizophragma hydrangeoides (Hydrangeaceae), has much in common with the true climbing hydrangeas, but a close look at its lace-cap flowers reveals the difference.
Like the familiar Hydrangea anomala subsp. petiolaris (climbing hydrangea), Schizophragma is a self-sticking liana with deciduous leaves. Both have tiny fertile flowers arranged in flattened cymes surrounded by showier sterile flowers. However, in Hydrangea, the sterile, outer flowers of the inflorescence bear four expanded cream-coloured sepals, while the those of Schizophragma exhibit a single, expanded, chalk-white sepal. One of three Asian species in the David C. Lam Asian Garden, Schizophragma hydrangeoides is found in montane woodlands of Korea and Japan.