Biennials or perennials; short-lived; sexual; caudex present or absent. Stems usually 1 per caudex branch, arising from center of rosette near ground surface, rarely arising laterally proximal to sterile shoots, 2.5-8.5 dm, densely pubescent proximally, trichomes simple or spurred, 0.9-1.5 mm, glabrous distally. Basal leaves: blade oblanceolate, 5-12 mm wide, margins shallowly dentate, sometimes ciliate near petiole base, surfaces sparsely to densely pubescent, trichomes short-to long-stalked, 2-or 3-rayed, usually 0.3-0.6 mm. Cauline leaves: 30-65, often concealing stem proximally; blade auricles 0.8-3 mm, surfaces of distalmost leaves usually glabrous. Racemes (12-)15-50-flowered, usually unbranched. Fruiting pedicels divaricate-ascending or horizontal, recurved, (15-)20-47 mm, glabrous. Flowers ascending at anthesis; sepals pubescent; petals white to pale lavender, 6-9 × 0.6-1 mm; valves glabrous; pollen ellipsoid. Fruits widely pendent, not appressed to rachis, not secund, curved, edges parallel, (2.5-)3-7.5 cm × 1.5-2.8 mm, glabrous; ovules 130-210 per ovary; style 0.2-0.5 mm. Seeds biseriate, 1.2-1.4 × 0.7-0.9 mm; wing continuous or distal, to 0.2 mm wide.
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