Perennial; caudex multicipital; branches prostrate, slender and usually matted; basal leaves tufted, linear-oblanceolate to obovate, entire to denticulate, 0.5-1.3(-2.5) cm long; stem leaves 3-8, slightly smaller; plants including pedicels cinereous with dense short branched trichomes; flowering stems simple, 10-15 cm tall; inflorescence loose, 12-28-flowered; petals 4, white; fruiting pedicels mostly longer than the siliques, lower up to 1 cm long; siliques ovate-lanceolate, 5-9 mm long, usually contorted, finely pubescent with minute branched trichomes; styles 1-2 mm long; seeds mostly 1 mm long. Flowers June to July.