Perennial herb 2-5 dm high, with (1-)3-6(-10) basal rosettes usually elevated above the ground on a branched, woody caudex; flowering stems 1 per basal rosette, arising centrally and terminating the rosette, glabrous; basal leaves broadly oblanceolate, 12-40 mm long and 5-10(-14) mm wide, margins shallowly dentate, simple marginal trichomes present on the petiole only, blade surfaces pubescent with forked to 4-rayed trichomes; cauline leaves alternate, lanceolate, auriculate, glabrous, 1-2 cm long; inflorescences elongate, ebracteate racemes; pedicels ascending at anthesis, horizontal or slightly ascending in fruit, lower fruiting pedicels 11-19 mm long; flowers pale lavender, 7-9 mm long and 3-4 mm wide; sepals 4, green to purplish, glabrous, 3-4.5 mm long, 1-2 mm wide, oblong; petals 4, pale lavender or white at anthesis, quickly fading to lavender, glabrous, 6.5-8.5 mm long, 1-2 mm wide, spatulate; stamens tetradynamous, slightly exceeding the sepals, pollen a mixture of narrowly ellipsoid, regularly tricolpate grains and shrunken, malformed grains; carpels 2, connate, equaling the longer stamens at anthesis but quickly elongating, ovary glabrous, style 0.2-0.5 mm long; fruit a compressed (latiseptate), linear silique, usually gently recurved, 3-7 cm long, 2-4 mm wide, seeds irregularly biseriate. Flowering March and April.