Climbing shrub. Leaves to 20 cm long, ovate to elliptic, roughly hairy, margin toothed or lobed. Flowers solitary and axillary or occasionally in clusters. Calyx cup-like. Petal tube to about 7 cm long, violet; summer.
T. laurifolia Lindl. from India is similar but has narrower leaves and flower stalks about 2 cm (not 3-5 cm) long.
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.