Perennials; short-to long-lived; apomictic; caudex sometimes woody. Stems usually 1 per caudex branch, arising from center of rosette near ground surface, (1.4-) 3-11.2 dm, densely pubescent proximally, trichomes simple, 0.6-1.5 mm, mixed with stalked, 2-(or 3-)rayed ones, 0.2-0.4 mm, sparsely pubescent distally. Basal leaves: blade oblanceolate, 3-10 mm wide, margins usually dentate, rarely entire, sometimes ciliate, trichomes (simple or branched), to 1 mm, surfaces densely pubescent, trichomes stalked, 2-5-rayed, 0.3-0.6 mm. Cauline leaves: (8-)14-60, often concealing stem proximally; blade auricles (1-)3-10 mm, surfaces of distalmost leaves glabrous or sparsely pubescent. Racemes 17-60-flowered, usually unbranched. Fruiting pedicels horizontal to divaricate-descending, usually straight, rarely slightly recurved, 4-13 mm, pubescent, trichomes spreading, 2-or 3-rayed. Flowers divaricate at anthesis; sepals pubescent; petals lavender to whitish, 5-8 × 1-2 mm, glabrous; pollen spheroid. Fruits horizontal, divaricate-descending or widely pendent, not appressed to rachis, not secund, curved, edges parallel, 5.5-10.5 cm × 1.5-2.2 mm; valves glabrous; ovules 80-162 per ovary; style 0.05-0.5 mm. Seeds uniseriate, 1.4-1.8 × 1-1.4 mm; wing continuous, 0.1-0.25 mm wide. 2n = 21.
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