Perennials; usually glabrous, rarely minutely pubescent. Rhizomes (tuberiform, fragile), globose to ovoid or suboblong, (3-)4-10 mm diam., (fleshy, deeply underground). Stems erect, unbranched, (2-)2.7-6(-7) dm, usually glabrous, rarely pubescent. Rhizomal leaves 3 (or 5-7)-foliolate, sometimes simple, 8-25(-38) cm, leaflets petiolulate or subsessile; petiole (5-)8-25 (-32) cm; lateral leaflets (when present) petiolulate to subsessile, blade similar to terminal, sometimes smaller; terminal leaflet (petiolule (0.7-)2-5(-11) cm), blade (of simple leaf) ovate to orbicular to broadly cordate or reniform, (1.5-)2.5-7.5(-10) cm × (12-)20-90(-130) mm, base obtuse to cordate, margins entire or dentate to shallowly sinuate, (often with apiculae at veins ending at margin, sometimes minutely pubescent on veins). Cauline leaves 2-5, usually 3 (or 5)-foliolate, rarely simple, petiolate, leaflets petiolulate or sessile; petiole 1-5(-9) cm, base not auriculate; lateral leaflets sessile, blade similar to terminal, smaller, margins usually dentate, rarely entire; terminal leaflet sessile or petiolulate, blade usually broadly ovate to suborbicular or lanceolate, rarely narrowly oblong, 1-7 cm × (5-)10-47 (-65) mm. Racemes ebracteate. Fruiting pedicels ascending to divaricate, 10-33(-41) mm. Flowers: sepals (erect to ascending), oblong, 3.5-4.5(-5.5) × 1.5-2 (-2.5) mm, lateral pair saccate basally; petals white to pale rose, often broadly obovate, 8-13(-15) × 4-8 mm (clawed, apex rounded); filaments: median pairs 4-6.5 mm, lateral pair 3-4 mm; anthers oblong, 1.2-1.7 mm. Fruits linear, 2.2-5.4(-6) cm × 2-3 mm; ovules 12-22 per ovary; style 2-5(-6) mm. Seeds dark brown, oblong to broadly ovoid, 1.7-2.8 × 1.2-1.8 mm. 2n = 32.
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