Herbs perennial, 10-30(-45) cm tall, sparsely pilose. Rhizomes slender, to 15 cm or longer, 1-1.5 mm in diam., without stolons. Stems erect, simple, ridged, pilose. Basal leaves rosulate, 2-11 cm; petiole 0.5-5 cm, ciliate; terminal leaflet obovate, 2-8(-13) × 2-7(-10) mm, petiolule 0.5-4 mm, pilose, base cuneate, margin 1-3-toothed on each side, apex acute, submucronate; lateral leaflets 5-11 pairs, obovate or ovate, pilose, asymmetric, slightly smaller than terminal lobe, sessile or rarely with a petiolule to 5 mm, base oblique to subcuneate, proximal margin 1-or 2-toothed, rarely 1-lobed, distal margin often entire, apex acute. Cauline leaves 1-3, (2-)4-10(-25) cm; petiole 0.5-4(-9) cm, ciliate, not auriculate at base; terminal leaflet and 6-9 pairs of lateral leaflets similar in morphology to those of basal leaves. Racemes terminal, 10-20-flowered. Fruiting pedicels erect to erect-ascending, (0.7-)1-2 cm, slender, pilose. Sepals oblong or ovate, 2.5-4 × 1-1.7 mm, sparsely pilose or glabrous, margin membranous, base of lateral pair saccate. Petals purple or rarely white, broadly obovate, 6.5-10 × 3-6 mm, cuneate into a clawlike base to 2 mm, apex rounded. Median filament pairs 3.5-5 mm, flattened; lateral pair 2.5-3.5 mm; anthers narrowly oblong, 0.8-1.1 mm. Ovules 10-14 per ovary. Fruit linear, 2.5-4 cm × 1.5-2 mm; gynophore 0.5-2 mm; valves smooth, glabrous; style 1-2.5 mm. Seeds brown, oblong, 1.8-2.1 × 1-1.3 mm, wingless. Fl. (Apr-)Jun-Sep, fr. Jul-Oct.
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