Perennial creeping herb with flowering stems to 20 cm or more tall. Leaves to about 3 cm long, roundish to kidney-shaped, tip sometimes pointed, toothed, long-stalked. Flower clusters in whorls of 4-6. Flowers with calyx 15-nerved, of 5 unequal teeth; corolla to 2 cm long, hairy outside, violet, occasionally white or pink; summer. Stamens 4, in 2 pairs, the upper pair longest.
An invasive plant mostly grown in hanging baskets for its foliage effect.
Source: (2002). Lamiaceae. 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.