Small perennial herb, branched from the base, 2-8 cm tall, suberect or ascending to spreading, often sparsely hairy with simple hairs below and glabrous above. Radical leaves spathulate to oblong, rosulate, 10-25 mm long, 2-5 mm broad, stalked; cauline leaves few to many, distant, oblong-elliptic to oblong-linear, 6-12 mm long, 2-4 mm broad, sessile or subsessile; upper ones usually bearing flowers in their axils; all leaves ± entire, glabrous subfleshy. Racemes 5-12-flowered, lax, bracteate at least below, up to 5 cm long in fruit. Flowers c. 3 mm across, white, pinkish or pale lilac; pedicels (2-) 4-6 mm long in fruit, thin, suberect or ascending. Sepals c. 2 mm long. Petals (3.5-) 4-4.5 mm long, c. 1.5 mm broad. Stamens c. 2-2.5 : 3 mm long; anthers c. 0.5 mm long. Siliculae sublanceolate to elliptic, flattened, subcompressed, (5-) 6-10 (-12) mm long, 1.5-2 mm broad, acute, glabrous; valves 1-veined, flattened; style c. 1 mm long with minute, depressed stigma; septum complete, incomplete or absent, hyaline. not veined; seeds 4-6 in each locule, 2-seriate, c. 1 mm long, ellipsoid, brown.