Perennials; usually long-lived; sexual; caudex often woody (well-developed). Stems usually 1 per caudex branch, arising from center of rosette, elevated on woody base or from ground surface, (2-)3-8 dm, densely pubescent proximally, trichomes short-stalked, 2-rayed and simple, to 1 mm, pubescent distally. Basal leaves: blade linear to oblanceolate, 2-7(-12) mm wide, margins usually entire, rarely denticulate, ciliate along petiole, trichomes to 1.5 mm, surfaces densely pubescent, trichomes usually short-stalked, 2-5-rayed (rarely some simple), 0.4-0.8 mm. Cauline leaves: 10-30(-45), often concealing stem proximally; blade auricles 2-5(-6) mm, surfaces of distalmost leaves pubescent. Racemes 12-50(-70)-flowered, usually unbranched. Fruiting pedicels usually divaricate-ascending, rarely horizontal, gently recurved or straight, 8-22 mm, pubescent, trichomes subappressed, 2-4-rayed. Flowers ascending at anthesis; sepals pubescent; petals purple, 9-14 × 2-4 mm, glabrous or sparsely pubescent (trichomes abaxially); pollen ellipsoid. Fruits usually divaricate-ascending, rarely horizontal, not appressed to rachis, not secund, usually curved, edges parallel, (6-)8-13 cm × 1.5-2.2 mm; valves glabrous or trichomes relatively few, scattered; ovules 90-250 per ovary; style 0.01-0.5 mm. Seeds uniseriate or sub-biseriate, 1.5-1.7 × 1-1.2 mm; wing continuous, 0.1-0.2 mm wide.
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