Prostrate to erect perennial shrubs. Leaves opposite, decussate, simple, entire, flat, concave or with margins involute (not in Victoria); stipules minute or absent. Flowers solitary or several together, axillary, sometimes crowded towards ends of branches; bracts small, caducous or absent; bracteoles distal on pedicels. Calyx 5-toothed, teeth unequal, upper 2 united into a lip; petals long-clawed, yellow and orange, red-brown or purplish; standard orbicular, longer than other petals; wings oblong; keel obtuse, almost straight; stamens all free; ovary narrowed at base, sessile or stipitate, pubescent or rarely glabrous; style filiform and incurved near apex (in Victoria) or thicker and hooked near apex, stigma small, terminal, ovules 2. Pod ovoid to obovoid, turgid (in Victoria) or compressed, hairy, sessile or stipitate (in Victoria); seeds usually 2, reniform; aril 2-lobed.
About 9 species, all endemic to Australia and found in all mainland States, but mostly in the south-west of Western Australia.