Erect, robust, deciduous or evergreen shrub or small tree, 1.5-5 m tall. Leaves 10-15 cm long, broadly ovate to round-ovate or cordate, 5-7 lobed. Flowers c. 12-15 cm across, solitary, axillary on upper branches, petals white turning red the following day. Fruits flattened globose capsule, c. 2.5 cm diameter.