Plants cespitose, caudex simple or branched; eglandular. Stems (0.3-)0.5-1.7(-2.5) dm. Leaves: petiole (0.5-)1-3(-4) cm, to 4 mm wide at base; blade linear-oblanceolate to narrowly ob-lanceolate, (0.7-)1.2-4(-5.2) cm × 2-5(-7) mm, base attenuate, margins entire or, rarely, obscurely dentate, apex acute or obtuse. Racemes 3-12-flowered. Fruiting pedicels (proximalmost) 6-20 (-30) mm. Flowers: sepals broadly oblong, (3-)4-5 × 1.5-2 mm; petals white to lavender or purple, (8-)10-13 × 3-5 mm, claw 3.5-4.5 mm, apex rounded to shallowly emarginate; median filaments 3.5-5 mm; anthers 0.8-1.5 mm. Fruits narrowly oblong, 1-2.5(-3.5) cm × 3-5 mm; valves eglandular; ovules 14-20 per ovary; style 0.2-0.5(-0.7) mm. Seeds 3.5-4.5 × 3-3.5 mm; wing 0.7-1 mm wide. 2n = 14.
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