Erect herb to 80 cm tall, sparingly to profusely branched; stems glabrous. Basal leaves not persistent. Cauline leaves reducing in number and size up stem, narrowly ovate to lanceolate, serrate, petiolate, sparsely hairy; hairs shortly stipitate branched, rarely simple. Inflorescence an elongated raceme. Sepals 2–3 mm long. Petals 4–5.5 mm long, white. Style 0.75–1.75 mm long. Siliqua 6–30 mm long, 1.25–1.75 mm wide; pedicels 7–15 mm long; valves convex. Seeds oblong to ovoid, 1.2–1.5 mm long, winged on cotyledonary margin.
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