Perennial, up to 30 cm tall, erect to spreading or ascending, ± hairy with simple short hairs; rootstock branched, densely covered with ± sheathing bases of the radical leaves. Radical leaves densely rosulate, long petioled, ovate or elliptic, 3-7 cm long, 1-2.5 cm broad, including 1.5-3 cm long petiole, entire or obscurely distantly toothed; cauline leaves lanceolate, elliptic-ovate to linear-lanceolate, 1-4.5 cm long, 0.3-1.5 cm broad, sessile, usually semiamplexicaul, entire or obscurely toothed; all leaves fleshy, ± glabrous, acute to subobtuse. Racemes 15-30-flowered, ebracteate, up to 7(-10) cm long in fruit. Flowers c. 3 mm across, white; pedicel up to 5 mm long in fruit, filiform. Sepals c.1 mm long, 0.6 mm broad, oblong, obtuse. Petals c. 2 mm long, 1 mm broad, spathulate with rounded apex. Stamens 6, c. 1 : 1.3 mm long, with minute anthers. Siliculae c. 3 mm long, 3.5 mm broad, ovate-elliptic, obscurely notched at the apex with subsessile, short, capitate stigma, hardly within the notch; valves glabrous, often conspicuously reticulate-veined; septum c. 0.5 mm broad; seed c. 1 mm long, ovate-elliptic, reddish-brown.