Herbs perennial, 15-40 cm tall, sparsely pilose or glabrescent. Rhizomes slender. Stems simple, slightly angled. Basal leaves often withered by flowering, trifoliolate; petiole 1.5-4.5 cm; leaflets similar to those of cauline leaves, smaller. Cauline leaves 1-4, trifoliolate; petiole 1.5-6 cm, not auriculate at base; terminal leaflet lanceolate, ovate, or broadly elliptic, 3-6.5 × 1-3.5 cm, sparsely pilose or glabrous, with a petiolule 5-12 mm, base obtuse or cuneate, margin ciliate and dentate or crenate, apex acute or acuminate; lateral leaflets 2, shortly petiolulate or sessile and base decurrent to rachis, nearly as large as terminal one, base oblique. Uppermost leaf often with a sessile terminal leaflet decurrent basally with lateral leaflets. Fruiting pedicels ascending or divaricate, 7-11 mm, straight, slender. Sepals oblong, 3.5-4.5 × 1.2-1.5 mm, base not saccate. Petals white, narrowly obovate, 6-8.5 × 1.5-3.5 mm, not clawed. Median filament pairs 3.5-4 mm, lateral pair ca. 3 mm; anthers oblong, 1.1-1.6 mm. Ovules 10-16 per ovary. Fruit linear, 3-5 cm × 1-1.5 mm; valves smooth, glabrous; style 1.5-2.5 mm. Seeds brown, narrowly oblong, 1.5-2 × 0.6-0.8 mm, apically winged. Fl. and fr. Mar-Jul.
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