Perennial, not foetid; stems erect, stout, branching, leafy, glabrous, 30-100 cm tall. Lvs mostly cauline, variable, petiolate, glabrous, linear-lanceolate to lanceolate and toothed, to broadly triangular in outline and deeply pinnatifid, 4-20 × 1-4-(10) cm; upper lvs becoming smaller. Racemes glabrous, (10)-30-60 cm tall. Pedicels 1.5-4 cm long. Sepals triangular, glabrous or rarely sparsely hairy, 4.5-6 × 2-3.5 mm. Petals yellow, spathulate, shortly clawed, 7-12 × 3-5 mm. Silique 20-30-(45) × 1.5-2 mm, on short gynophore (0.5)-1-2 mm long; beak seedless. Seeds oblong, brown, 1-1.5 mm long.