Perennials; long-lived; (ces-pitose); sexual or apomictic; caudex woody. Stems 1 or several per caudex branch, arising from center or margin of rosette near ground surface, 0.8-2.8(-3.5) dm, sparsely pubescent proximally, trichomes simple and subsessile, 2-rayed, 0.3-0.6 mm, glabrous distally. Basal leaves: blade oblanceolate to linear-oblanceolate, 1-4(-6) mm wide, margins entire or subapically toothed, ciliate proximally, trichomes (simple), to 0.6 mm, surfaces densely pubescent, trichomes short-stalked, 4-8-rayed, 0.05-0.1 mm. Cauline leaves: 2-6, not concealing stem; blade auricles 0.5-1.5 mm, surfaces of distalmost leaves glabrous. Racemes 5-17-flowered, usually unbranched. Fruiting pedicels ascending to divaricate-ascending, straight, 4-14 mm, glabrous. Flowers ascending at anthesis; sepals glabrous or pubescent; petals lavender to purple, 3.5-5.5 × 1-1.8 mm, glabrous; pollen ellipsoid or spheroid. Fruits ascending to divaricate-ascending, not appressed to rachis, not secund, straight to slightly curved, edges parallel, 3-7 cm × 1-1.5 mm; valves glabrous; ovules 52-72 per ovary; style 0.05-0.3 mm. Seeds uniseriate, 1-1.5 × 0.7-1 mm; wing often distal, ca. 0.1 mm wide. 2n = 14, 15.
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