Perennials; short-lived; apo-mictic; caudex usually not woody. Stems 3 to many per caudex branch, arising from margin of rosette near ground surface, 3.5-6 dm, pubescent proximally, trichomes short-stalked, 2-4-rayed, 0.2-0.3 mm, glabrous distally. Basal leaves: blade oblanceolate, 3-7 mm wide, margins dentate, ciliate proximally, trichomes (simple), to 0.3 mm, surfaces pubescent, trichomes short-stalked, 4-8-rayed, 0.05-0.2 mm. Cauline leaves: 5-10, not concealing stem; blade auricles 0.5-1 mm, surfaces of distalmost leaves glabrous. Racemes 10-18-flowered, usually unbranched. Fruiting pedicels divaricate-descending, straight, 5-10 mm, glabrous. Flowers divaricate-ascending at anthesis; sepals pubescent; petals lavender, 4-6 × 1-1.5 mm, glabrous; pollen spheroid. Fruits divaricate-descending, not appressed to rachis, not secund, curved, edges parallel, 4-6 cm × 1.5-1.8 mm; valves glabrous; ovules 60-70 per ovary; style 0.1-0.4 mm. Seeds uniseriate, 1.5-2 × 1-1.3 mm; wing distal, ca. 0.1 mm wide.
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