Evergreen shrub to 1 m or so tall. Leaves opposite, narrow-lanceolate and willowlike, often purple, the leaves of each pair of different size, margin toothed. Flowers pinkish mauve; summer.
Source: (2002). Acanthaceae. In: . Horticultural Flora of South-eastern Australia. Volume 4. Flowering plants. Dicotyledons. Part 3. The identification of garden and cultivated plants. University of New South Wales Press. (as Strobilanthes anisophyllus)