Herbs biennial or perennial, (25-)40-100(-150) cm tall, sparsely to densely pilose with simple and stalked forked trichomes; multicellular glandular tubercles present throughout except for flowers. Stems branched above or rarely basally. Basal leaves with petioles (1-)2-10(-15) cm; leaf blade lanceolate, to 40 × 14 cm, coarsely dentate or pinnatifid; lateral lobes oblong or lanceolate, smaller than deltoid or lanceolate terminal lobe. Uppermost leaves subsessile, lanceolate or sublinear, dentate or entire. Fruiting pedicels 1-2(-2.3) cm, slender, divaricate, straight. Sepals yellowish, oblong, 2.5-3 × 1-1.5 mm, spreading, glabrous. Petals yellow, obovate, (5-)6-7(-8) × (2-)3-5 mm; claw slender, 1-2 mm. Filaments yellowish, 1.5-3.5 mm, strongly tetradynamous, not dilated at base; anthers oblong, 0.8-1 mm. Fruit ovoid, rarely suboblong and slightly constricted at middle, terete, (5-)6-8 × 3-4(-5) mm, glabrous, woody, gradually tapering to apex, tuberculate, 1- or 2-loculed; valves not distinct; style obsolete or rarely to 0.5 mm; stigma entire. Seeds 2 per fruit, subglobose, plump, 2-2.5 mm in diam. Fl. and fr. May-Jul. 2n = 14.
Fields. Heilongjiang, Liaoning [Kazakhstan, Mongolia, Russia; SW Asia, Europe; introduced elsewhere].
