Annual or perennial herbs, glabrous or hairy; stems short. Leaves basal or cauline, virtually entire or toothed to pinnatipartite, flat, sessile or petiolate, with conspicuous axillary hairs. Inflorescence axillary dichasia, or flowers solitary in axils. Flowers strongly zygomorphic; bracteoles present; sepals 3 or 5, usually adnate to ovary at base, upper one often larger; corolla shortly tubular, opened along the posterior slit, 2-lipped, yellow, orange, pink, mauve or white, lobes winged to some extent, usually unequal; stamens free, epigynous, anthers free; ovary superior, incompletely 2-celled, ovules in 2 rows, few to many per cell, style simple, stigma entire or emarginate, indusium erect, 2-lipped, with bristles on lips. Fruit a 2- or 4-valved capsule, dehiscent; seeds lenticular, with a wing or thickened rim.
21 species, 20 endemic to Australia and 1 extending to New Guinea.