Perennial herb, up to 0.3 m high. Stems decumbent or procumbent. Leaves with blade narrowly oblong, margins finely serrate, upper and lower surfaces glabrescent, hairs stellate. Flowers: in 2-flowered cymes; calyx deeply 5-cleft, lobes broadly subulate, not much shorter than petals; petals red, pink, mauve, purplish to blue; Sep.-Apr.
Prostrate herb. Leaves narrowly ovate to ovate, 2-3 times as long as broad, margin finely serrate. Calyx with stellate hairs, sometimes mixed with simple, gland-tipped hairs. Flowers red, pink, mauve, purplish to blue.