Perennials; usually long-lived; apomictic; caudex often woody. Stems usually 1 per caudex branch, arising from center of rosette near ground surface, 1.5-4.5 dm, densely pubescent proximally, trichomes short-stalked, 4-9-rayed, 0.05-0.2 mm, glabrous or sparsely pubescent distally. Basal leaves: blade linear to narrowly oblanceolate, 1-4 mm wide, margins entire, ciliate at petiole base, trichomes (simple), to 0.5 mm, surfaces densely pubescent, trichomes short-stalked, 4-9-rayed, 0.05-0.2 mm. Cauline leaves: 5-9, not concealing stem; blade auricles 0.5-1 mm, surfaces of distalmost leaves sparsely pubescent. Racemes 10-18-flowered, sparingly branched. Fruiting pedicels divaricate-descending, gently curved downward, 6-12 mm, pubescent, trichomes appressed, branched. Flowers divaricate-ascending at anthesis; sepals pubescent; petals lavender, 5-7 × 0.7-1.2 mm, glabrous; pollen spheroid. Fruits divaricate-descending, not appressed to rachis, not secund, gently curved, edges parallel, 4.5-6 cm × 1.2-1.5 mm; valves glabrous; ovules 62-80 per ovary; style 0.5-1 mm. Seeds uniseriate, 1.2-1.7 × 0.8-1.2 mm; wing mostly distal, 0.05-0.1 mm wide.
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