Annual herb with densely caespitose rosette. Stems erect, glabrous, to 50 cm tall. Lvs green, hairy on midrib, petiolate. Rosette lvs many, pinnatifid to pinnate, 5-15-(30) × 1.5-4-(5) cm; margins dentate; terminal lobe small; lateral lobes acute to acuminate, in (7)-10-15 pairs. Stem lvs few, all simple, linear, entire, c. 1 cm long. Racemes to 50 cm long; open fls below level of buds, nodding after anthesis. Sepals narrow-oblong, 3-4 × c. 1 mm. Petals cream with purple veins, c. 8 × 2 mm. Lateral stamens slightly spreading. Silique terete, glabrous, linear, constricted between seeds, 40-60 × c. 2 mm; gynophore 0; valves with prominent median and 4-6 slightly weaker lateral veins; beak linear, 1-(2)-seeded, (7)-10-18 mm long, = valves. Seeds red-brown, c. 1.5 mm diam.
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