Perennials; short-to long-lived; apomictic; caudex sometimes woody. Stems usually 2-7 per caudex branch, arising from margin of rosette near ground surface, 0.5-2(-3) dm, densely pubescent proximally, trichomes simple and stalked, 2-rayed, 0.3-0.8 mm, glabrous distally. Basal leaves: blade narrowly oblanceolate, 1-3 mm wide, margins entire, ciliate, trichomes to 1 mm, surfaces pubescent, trichomes stalked, 2-4-rayed, 0.3-0.8 mm. Cauline leaves: 3-7(-10), not concealing stem; blade auricles 0.2-1 mm, surfaces of distalmost leaves glabrous. Racemes 6-15-flowered, unbranched. Fruiting pedicels horizontal to divaricate-ascending, straight, 3-9 mm, glabrous. Flowers ascending at anthesis; sepals pubescent; petals white or lavender, 5-7 × 1.5-2.5 mm, glabrous; pollen spheroid. Fruits horizontal to divaricate-ascending, not appressed to rachis, not secund, usually strongly curved, edges parallel, 3.5-6.5 cm × 1.7-2 mm; valves glabrous; ovules 50-84 per ovary; style 0.05-0.5 mm. Seeds uniseriate, 1.5-2 × 1.1-1.5 mm; wing continuous, 0.1-0.2 mm wide.
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