Annual, biennial or perennial herbs, usually ± hairy with simple, forked or stellately branched hairs, sometimes glabrous above. Rosette leaves usually stalked and hairy; cauline leaves 0-many, usually sessile, amplexicaul; all leaves usually dentate. Racemes often lax in fruit, generally ebracteate. Flowers mediocre or large, white, pinkish or violaceous, often turning dull-yellowish when dried; pedicels often elongating in fruit, ascending rarely spreading. Sepals slightly to distinctly saccate at base, erect or suberect. Petals about twice as long as the sepals, obovate-oblong, shortly clawed. Stamens 6, filaments not appendaged; anthers oblong-linear. Lateral nectar glands usually annular, incomplete; middle often minute, usually conical, not joining the laterals. Ovary linear, many ovuled; stigma depressed, usually on a distinct style. Siliquae linear-oblong, usually strongly compressed with a distinct mid-vein on the valves, and glabrous (rarely pubescent), bilocular, dehiscent, many seeded; seeds ovate, compressed, sometimes narrowly margined (winged); septum membranous, not veined; radicle usually accumbent.