Annual, sometimes perennial, taprooted herbs. Hairs simple, often bristly. Stems erect, leafy. Lvs lyrate-pinnate, lyrate-pinnatifid, or not lobed; margins toothed. Racemes ebracteate. Sepals spreading, not saccate. Petals yellow. Stamens 6, without appendages. Lateral nectaries 2, inside the bases of the single stamens; median nectaries 2, outside each median pair of stamens. Stigma sessile, shortly 2-lobed. Silique narrow-lanceolate to linear, dehiscent; valves distinctly 3-(7)-veined; beak tapering, weakly to strongly flattened, 0-9-seeded. Seeds spherical, not winged, in 1 row per locule.