Perennials; long-lived; (somewhat cespitose); sexual or apomictic; caudex woody. Stems usually 1 per caudex branch, arising from center of rosette near ground surface, or arising laterally proximal to sterile shoots, 0.5-2 (-2.5) dm, glabrous or sparsely pubescent proximally, trichomes short-stalked, 2-6-rayed, 0.1-0.2 mm, glabrous distally. Basal leaves: blade oblanceolate to obovate, 1.5-5 mm wide, margins usually entire, rarely slightly dentate, ciliate along petiole, surfaces densely to sparsely pubescent, trichomes short-stalked, 3-9-rayed, 0.1-0.2 mm. Cauline leaves: 2-8(-12), not concealing stem; blade auricles absent or 0.1-0.5 mm, surfaces of distalmost leaves glabrous or sparsely pubescent. Racemes 3-12(-17)-flowered, usually unbranched. Fruiting pedicels divaricate-ascending to slightly descending, usually slightly recurved, rarely straight, 2-6 mm, glabrous or sparsely pubescent, trichomes appressed, branched. Flowers divaricate-ascending at anthesis; sepals glabrous or sparsely pubescent; petals purple to lavender, 3.5-6 × 1-1.5 mm; pollen ellipsoid or spheroid. Fruits divaricate-ascending to slightly descending, not appressed to rachis, secund, straight or curved, edges parallel, (1.6-) 2-4.4 cm × 1.6-2.3 mm; valves glabrous; ovules 28 40(-44) per ovary; style 0.1-0.2 mm. Seeds uniseriate, 1.3-2 × 1-1.5 mm; wing continuous, 0.1-0.5 mm wide. 2n = 14.
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