Annual (or biennial), 7-20 (-30) cm tall, often with many branches from the base, sparsely hairy with glandular and eglandular hairs. Basal leaves rosulate, oblanceolate, interruptedly pinnatifid, with narrow lobes, 20-50 mm long, 3-5 (-8) mm broad, shortly stalked; upper leaves similar to basal leaves but smaller, subsessile or sessile. Racemes 10-20-flowered, up to 15 cm long in fruit. Flowers c. 8 mm across, yellow; pedicels 10-15 mm long in fruit, ascending or spreading, slightly thickened, sometimes subreflexed. Sepals c. 3.5 mm long. Petals 6-8 mm long, 3-4 mm broad. Stamens c. 3:4.5 mm long. Siliquae 15-20 mm long, 1 (-1.2) mm broad, linear, very finely torulose, often curved or subreflexed; beak c. 5(-7) mm long, thin; seeds 8-10 on each side, c. 0.7 mm long, suborbicular.