Woody undershrub to 60 cm tall, erect; stems terete, quadrangular or fluted, usually with papillae on the ribs. Leaves cauline, bi-to tri-sect, rarely multisect, mostly to 4 cm long; segments linear, rarely spathulate. Inflorescence an elongated raceme. Sepals erect to deflexed, 3–4.5 mm long, dimorphic. Petals 3–6 mm long, white to yellow. Style less than 1 mm long. Siliqua linear, 6–40, mostly 20–30 mm long, 1–1.5 mm wide; valves flat to convex with one prominent vein; gynophore to 0.4 mm; pedicels spreading to ascending, 10–15 mm long. Seeds ovoid to oblong, 0.7–1 mm long.
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