Glabrous or sparsely hairy biennial. Stems branched above, (20)-30-60 cm tall. Rosette lvs lyrate-pinnate, glabrous or sparsely hairy especially on petiole and margins, (5)-8-18-(25) × (1.5)-2-3-(4) cm; terminal lobe of oldest lvs ovate to oblong with cordate base, becoming narrower and less cordate on younger lvs; lateral lobes in (0)-2-5 pairs, < width of terminal lobe; margins entire or sinuate. Stem lvs becoming deeply pinnatifid with deflexed or amplexicaul lobes at base; terminal lobe narrowly ovate, cuneate or obovate, rather irregularly toothed or lobed or entire; lateral lobes in 1-4 pairs, linear. Raceme to 35 cm long; pedicels erecto-patent at fruiting, 3-5 mm long. Sepals glabrous, 2-3.5 × 1.5 mm. Petals 4.5-5-(6) × 1-1.5 mm. Silique erect to erecto-patent, 20-30-(40) × 1.5-2 mm; style 1-1.5 mm long.