Perennials; (caudex simple or few-branched); (glaucous), usually glabrous, (petioles of basal leaves pubescent). Stems usually unbranched, rarely branched, 1.5-4(-5) dm. Basal leaves rosulate; petiolate (petioles usually not or rarely narrowly winged, setose-ciliate); blade narrowly oblanceolate to lanceolate, 4-10 cm, margins entire. Cauline leaves: blade oblong-lanceolate, 2.5-8 cm × 5-16(-25) mm, (smaller distally), base auriculate, margins entire, (apex obtuse to acute). Racemes ebracteate, (lax). Fruiting pedicels divaricate-ascending, (straight), 3-10 mm. Flowers: calyx campanulate; sepals purple, (broadly oblong), 5-8 mm, not keeled; petals maroon-purple (claw purplish), 9-12 mm, blade 2-4 × 0.7-1 mm, margins not crisped, claw 6-8 mm, wider than blade; stamens in 3 unequal pairs; filaments (distinct): abaxial pair 5-7 mm, lateral pair 3-5 mm, adaxial pair 7-9 mm; anthers (all) fertile, 2.5-4 mm; gynophore 0.5-1 mm. Fruits ascending to divaricate-ascending, smooth, straight, flattened, 4.5-9.7(-10.5) cm × 2-2.7(-3) mm; valves each with prominent midvein; replum straight; ovules (42-)48-60 per ovary; style 0.1-1 mm; stigma entire. Seeds oblong, 2-2.5 (-2.7) × 1.5-2 mm; wing 0.2-0.4 mm wide, continuous.
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