Annual, biennial or perennial herbs, branched, usually glabrous and glau¬cous except the siliculae. Basal leaves usually elliptic-oblong, stalked to sessile; cauline leaves sessile, cordate or sagittate to ovate-oblong, amplexicaul, usually entire. Inflorescence racemose, branched or panicled, ebracteate, often becom¬ing lax and elongated in fruit. Flowers small, yellow to whitish or lilac-white; pedicel filiform, often deflexed in fruit. Sepals suberect, almost equal, not saccate at the base. Petals slightly to c. twice as long as the sepals, oblong-obovate with rounded apex. Stamens 6; filaments not appendaged; anthers minute. Lateral nectar glands almost annular, often subsinuate towards the inner side; middle narrow, joining the laterals. Ovary oblong, elliptic or ovate, flattened, unilocular with 1-2 pendulous ovules; stigma almost sessible, sub-bibbed. Siliculae usually linear, oblong-cuneate to suborbicular, indehiscent, laterally flattened, unilocular, slightly to conspicuously winged, glabrous or minutely hairy, rarely papillose; apex usually truncate or sub-retuse; locule walls usually with a distinct mad-vein; septum absent; seed usually 1, oblong, brownish; radicle accumbent or incumbent.