Annual to perennial herbs, often caespitose, usually hairy with branched or simple hairs. Aerial stem scapose or leafy. Basal or radical leaves usually densely rosulate, shortly stalked to sessile (very rarely long stalked) ; cauline leaves usually sessile; all leaves simple, entire to sinuate-dentate. Racemes usually ebracteate, corymbose. Flowers small, sometimes mediocre, yellow or whitish (often drying white), rarely lilac, pedicellate. Sepals subequal, not or slightly saccate at base. Petals obovate-cuneate, apex subemarginate or entire. Stamens 6 (sometimes outer 2 abortive), without appendages (rarely outer filaments 1-dentate); anthers ovoid or oblong, obtuse. Nectar glands various, lateral 2-4 lobed, often lobes joined forming a horse-shoe shaped structure; middle glands usually absent. Ovary often broadly or narrowly elliptic, 4-many ovuled; style usually distinct with short stigma. Siliculae usually short (rarely siliquiform), ovate, suborbicular to elliptic or lanceolate, broadly septate, bilocular, dehiscent, straight or contorted, usually compressed; valves plane to subconvex, often with a distinct mid-vein, glabrous or hairy; septum membranous, complete, usually not veined; seeds often biseriate in each locule, 2- many, ovate or elliptic, often pale brown, not mucilaginous when wet; radicle accumbent.