Annual, up to 1 m, subsimple or branched from base. Base of stem and petioles of at least lower leaves with long stiff retrorse white hairs. Lower leaves petiolate, lyrate-pinnatifid, toothed, rarely simple; upper leaves much smaller, sessile, entire. Petals 8 x 4 mm, yellow with darker yellow veins. Fruiting pedicels adpressed to stem, 2-5 mm, up to 1 mm thick. Fruit 6-10 mm, glabrous or ± densely covered with stiff white hairs; lower part 2-3 x 1,5 mm, 1-3-seeded, sometimes sterile; upper part 2-3 x 3 mm, ovoid or globose, lengthwise rugose-sulcate; beak 1-4 mm. Fl. 4-6. Weed of cultivated places, s.l.-c. 1000 m.
W., C. & S. Europe, N. Africa, S. Russia, S.W. Asia.