Shrub or small tree, up to 6 m high. Leaves ovate to broadly lanceolate or elliptic, bicoloured. Flowers in 1-many-flowered, cymose inflorescences. Corolla waxy white, bilabiate, up to 20 mm long with marked pouch on anticous side (remote from axis) and mouth slit-like; inside with purple spots. Flowering time mainly Nov.-Apr.