Annual to perennial taprooted herbs. Hairs simple, stiff, or 0. Stems erect, leafy. Lvs shallowly to deeply pinnatifid, lobed, or toothed. Racemes ebracteate. Sepals somewhat spreading, inner pair not or slightly saccate. Petals yellow, rarely white or lilac. Stamens 6, without appendages, the outer pair sometimes sterile. Lateral nectaries 2, reniform at bases of lateral stamens; median nectaries 2, ligulate outside each pair of median stamens. Style short; stigma very shortly 2-lobed. Silique linear to narrow-oblong, dehiscent; valves distinctly 1-veined; beak narrowly conic, with or without seeds. Seeds ovoid, not winged, in 2 rows per locule.