Biennials; eglandular; finely pubescent, often canescent, trichomes dendritic, rarely also mixed with simple ones. Stems erect, unbranched basally, branched distally, 6-11 dm. Basal leaves: petiole 0.5-1.5 cm; blade pinnate, oblanceolate to obovate or ovate in outline, 1-5 cm, lateral lobes (2-5 pairs), linear, margins entire or serrate to incised (apex obtuse). Cauline leaves sessile or shortly petiolate; blade smaller distally, distal lobes often narrower, surfaces densely pubescent. Racemes (paniculate, often with short branches), considerably elongated in fruit. Fruiting pedicels divaricate-ascending, straight, 4-7(-11) mm. Flowers: sepals spreading, yellowish, oblong, 1.4-2 mm, pubescent, (trichomes dendritic, sometimes mixed with simple ones); petals oblanceolate, 0.7-1 × 0.1-0.2 mm; median filaments 1.5-2 mm; anthers 0.2-0.3 mm. Fruits divaricate to erect, linear to oblong, not torulose, 3-8(-10) × 1-1.2 mm; valves each with distinct midvein; septum not veined; ovules 10-28 per ovary; style obsolete to 0.1 mm, glabrous. Seeds biseriate, light brown, ellipsoid, 0.5-0.7 × 0.3-0.4 mm. 2n = 42.
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