Schizophragma Hydrangeoides. A climber closely related to the Hydrangea. Large dark green toothed heart shaped leaves. Deciduous. Can climb very high on a tree but does not attach to walls like Boston Ivy and is almost self-supporting. Big white panicle of flowers. Prefers part to full shade. Schizophragma hydrangeoides, while called the Japanese Hydrangea-vine, is not actually a hydrangea. It is, however, in the Hydrangea family. At first glance, at a distance or when out flower, it can look very much like Hydrangea anomala petiolaris the Climbing Hydrangea. But upon closer inspection the two are easy to be distinguished because true Hydrangea has 4 petals (actually sepals) while Schizophragma has one solitary heart-shaped sepal.