Perennial stoloniferous trailing herbs. Leaves opposite, stalked, roundish to kidney-shaped, margin dissected. Flower clusters 1-sided, each whorl of 2-6 flowers with leafy stalked bracts. Flowers with calyx tubular to bell-shaped,15-veined, 2-lipped, with the upper lip 3-toothed, lower 2-toothed. Corolla 2-lipped, protruding from the calyx and swollen towards the tip, the upper lip more or less erect, lower lip spreading, 3-lobed. Stamens 4, lower ones rudimentary. Fruit of 4 smooth, ovoid nutlets.
Generally grown as a plant for hanging baskets.
Trailing stems and more or less kidney-shaped leaves.
12 species from Europe.
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.