Perennials; glabrous or sparsely pubescent. Stems prostrate, decumbent, ascending, or suberect, branched mainly basally, (0.5–)1.5–8(–10) dm. Basal leaves not rosulate; similar to cauline. Cauline leaves petiolate, or (distal) often subsessile; blade deeply pinnatisect, (lobes 3–6 on each side, sublinear, lanceolate, oblong, elliptic, or ovate), (2–)3.5–15(–20) cm × (7–)10–45(–60) mm, base usually not auriculate, rarely minutely auriculate, margins dentate, serrate, subentire, or (distally) pinnatisect, (lobes 1–3 on each side). Racemes elongated. Fruiting pedicels divaricate, straight, (3–)4–10(–12) mm. Flowers: sepals ascending or spreading, oblong, 1.8–3(–3.5) × 0.7–1.5 mm; petals yellow, spatulate or obovate, (2.2–)2.8–5.5(–6) × 1.5–2.5 mm; median filaments (1.5–)1.8–3.5(–4) mm; anthers oblong, 0.7–1 mm. Fruits siliques, straight, usually linear, rarely oblong-linear, 10–20(–25) × (0.7–)1–1.3(–1.6) mm; valves glabrous; ovules 24–80 per ovary; style 0.5–1(–1.5) mm. Seeds (rarely produced), usually uniseriate, rarely sub-biseriate, reddish brown, ovoid, 0.5–0.9 mm (0.4–0.5 mm diam.), colliculate. 2n = 32, 40, 48.
