Perennial herbs, prostrate or spreading, hoary-tomentose, branched mostly from the base; branches leafy; hairs branched or simple, white. Leaves pinnatisect, many jugate; basal leaves shortly stalked, upper sessile or subsessile; lobes short, lanceolate. Racemes corymbose, somewhat lax in fruit, bracteate. Flowers small, white, subsessile. Sepals spreading, oblong-elliptic, not saccate at base. Petals about twice as long as the sepals, spathulate, clawed. Stamens 6, filaments linear; anthers minute, ovoid, obtuse. Lateral nectar glands in pairs, minute; middle absent. Ovary oblong, many ovuled; style minute with short capitate stigma. Siliculae oblong, laterally flattened, often subcontorted, bilocular, subdehiscent, keeled but not winged; valves membranous, glabrous to slightly hairy, obscurely veined; septum narrowly elliptic, membranous; seeds 10-16 in each locule, small, oblong-ellipsoid, reddish brown; radicle incumbent.