Annual taprooted herbs. Glabrous. Stems ascending, leafy. Lvs not lobed to pinnatifid; margin entire, crenate or bluntly toothed. Racemes ebracteate. Sepals erect, the inner saccate. Petals white to pink to purple. Stamens 6, without appendages. Lateral nectaries 2, crescent-shaped behind single stamens; median 2, variously shaped, in front of paired stamens. Style short; stigma capitate. Silique indehiscent, dry and corky, composed of 2 falsely 1-celled, jointed, indehiscent segments: upper segment beaked, terete or angled, detaching at joint; lower segment narrower, cylindric, or obconic, sometimes weakly angled, stalk-like when seedless. Seeds ellipsoid, not winged, (0)-1 per segment.