Deciduous glabrous shrub 1–3 m high. Leaves broadly ovate to obovate, 7.5–19 cm long, 4–13 cm wide, margins serrate; petioles 4 cm long. Inflorescence corymbose; calyx lobes 5, deltoid, 0.5–1 mm long (1–3 cm long in sterile flowers); petals 5, 3.5–4 mm long; stamens 10, 3.5–4.5 mm long; styles 2.5–3.5 mm long; sterile flowers white, blue, purple or pink. Capsules 6.5–8 mm long, conical at apex; seeds obovoid, c. 1 mm long. Flowers spring–autumn.
HSF, OtR. Naturalised in wet sclerophyll forest in the Dandenongs. Native to Japan.
