Annual herbs, glabrous or hairy. Leaves toothed to entire. Inflorescence a raceme or elongating corymb. Sepals spreading, usually hooded; petals clawed, sometimes absent; stamens 6. Fruit spreading, about as long as broad, dehiscent, flattened at right-angles to the septum; stigma sessile or almost so, capitate or obscurely bilobed; valves winged; seeds 2–9 per locule, mucous.
2 species, both endemic to Australia.