Creeping, carpet-forming plant, rooting at the nodes. Leaves 6-10 cm long, elliptic, blunt, with a network of red or white veins. Flowers white, in 4-angled spikes.

var. argyroneura (Coëm.) Nichols, Silver Nerve Plant, is readily available and has silvery veins.

var. verschaffeltii is the typical form with rosy red veins.

Source: Spencer, R. (2002). Acanthaceae. In: Spencer, R.. 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.