Plants 5-30 cm tall, cespitose, glandular or eglandular, pubescent with crisped, simple retrorse trichomes to 1.5 mm, or glabrous; caudex branched, covered with petiolar remains of previous years. Basal leaves rosulate; petiole broadened at base, often ciliate, 1-6 cm; leaf blade lanceolate to linear-lanceolate, 2-9 × 0.5-2 cm, pubescent or glabrous, base cuneate or attenuate, margin entire, apex acute to subacuminate. Cauline leaves absent. Racemes 2-10-flowered. Fruiting pedicels ascending to divaricate, glandular or eglandular, lowermost 1-2.5 cm. Sepals purple, linear to linear-oblong, 9-12 × 2-3 mm, glabrous, pubescent, or glandular, white margined. Petals purple, broadly obovate, 2.5-3 × 0.8-1.5 cm, apex deeply emarginate; claw 1-1.7 cm. Filaments purple, median pairs 6-10 mm, lateral pair 4-7 mm; anthers linear, 3-5 mm. Ovules 30-40 per ovary. Fruit linear to linear-lanceolate, 4-9(-11) cm × 4-6 mm; valve margin flat; replum flattened; style 0.5-1(-2.5) mm; stigma 0.5-1.5 mm. Seeds orbicular or suborbicular, 4-6 mm in diam., flattened, broadly winged; wing undulate, to 1.5 mm wide. Fl. Jun-Jul, fr. Jul-Aug.
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