Perennials; long-lived; sexual; caudex woody. Stems usually 2-5 per caudex branch, arising laterally proximal to sterile shoots or rosette, often elevated above ground surface on woody base, (1.5-)2-7 dm, densely pubescent proximally, trichomes short-stalked, Y-shaped, 0.2-0.4 mm, often mixed with 3-5-rayed or (rarely) simple ones, usually glabrous distally. Basal leaves: blade oblanceolate to obovate, 3-15(-20) mm wide, margins dentate, ciliate proximally, trichomes to 1.2 mm, surfaces moderately to densely pubescent, trichomes short-stalked, 3-6-rayed, 0.2-0.4 mm. Cauline leaves: 4-12(-17), not concealing stem; blade auricles 0.5-3.5 mm, surfaces of distalmost leaves glabrous. Racemes 16-35-flowered, usually unbranched. Fruiting pedicels usually horizontal, straight or slightly recurved, (6-) 10-25 mm, usually glabrous. Flowers ascending at anthesis; sepals pubescent; petals white to purplish, 5-9 × 1-1.5 mm, glabrous or sparsely pubescent (occasionally some trichomes abaxially); pollen ellipsoid. Fruits widely pendent, not appressed to rachis, not secund, usually curved, edges parallel, (3-)4-7 cm × 1.7-2.1 mm; valves glabrous; ovules 60-96 per ovary; style 0.05-0.4 mm. Seeds uniseriate, 1.1-1.5 × 0.9-1.2 mm; wing continuous, 0.1-0.2 mm wide. 2n = 14.
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