Perennials; (short-lived, caudex not woody); usually glabrous, (basal leaf blade margins pubescent, sometimes sepals). Stems unbranched or branched, (few, glaucous), 6-15(-18) dm. Basal leaves often rosulate; petiolate; blade (fleshy), ob-lanceolate to obovate, 3.5-21 cm, margins dentate, (bristly ciliate throughout or only teeth and petiole ciliate). Cauline leaves: blade lanceolate to narrowly ovate, 3.5-11(-15) cm × 6-14 mm (smaller distally), base auriculate to amplexicaul, margins usually entire or undulate, rarely dentate. Racemes ebracteate, (with densely clustered buds, later lax). Fruiting pedicels divaricate-ascending, (straight), 5-18 mm. Flowers: calyx campanulate; sepals (suberect), purple, (broadly ovate or oblong), 7-10 mm, not keeled, (apically bristly or not); petals light purple (with pale yellow claw), 9-12 mm, blade 2-3.5 × 0.5-1 mm, margins not crisped, claw 6-9 mm, wider than blade; stamens tetradynamous; filaments: median pairs (distinct), 6-8 mm, lateral pair 4-6 mm; anthers (all) fertile, 3-4 mm; gynophore 0.5-1.5 mm. Fruits spreading to ascending, smooth, slightly curved to straight, flattened, 6-14 cm × 2-3.5 mm; valves each with obscure midvein; replum straight; ovules 50-102 per ovary; style 1-3 mm; stigma 2-lobed. Seeds oblong, 2-3 × 1.4-2 mm; wing 0.1-0.2 mm wide at apex.
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