Perennials; usually long-lived; apomictic; caudex often woody. Stems usually 1 per caudex branch, arising from center of rosette, elevated on woody base or from near ground surface, 1.5-4.5 dm, densely pubescent proximally, trichomes short-stalked, 2-7-rayed, 0.2-0.5 mm (sometimes mixed with some larger trichomes proximally), sparsely pubescent distally. Basal leaves: blade linear-oblanceolate, 2-5 mm wide, margins entire or denticulate, ciliate at petiole base, trichomes (simple), to 1 mm, surfaces densely pubescent, trichomes short-stalked, 4-8-rayed, 0.15-0.4 mm. Cauline leaves: 3-8, not concealing stem; blade auricles 0.7-2 mm, surfaces of distalmost leaves sparsely pubescent. Racemes 11-22-flowered, usually unbranched. Fruiting pedicels horizontal, straight or slightly curved, 7-14 mm, pubescent, trichomes appressed, branched. Flowers divaricate-ascending at anthesis; sepals pubescent; petals whitish to pale lavender, 7-10 × 1.5-3 mm, glabrous; pollen spheroid. Fruits horizontal, not appressed to rachis, not secund, usually straight, edges parallel, 3.5-5 cm × 1.7-2 mm; valves glabrous proximally, pubescent distally; ovules 72-92 per ovary; style 0.1-0.3 mm. Seeds sub-biseriate, 1.1-1.3 × 0.7-1 mm; wing continuous, ca. 0.1 mm wide.
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