Plants robust. Flowering stems simple, 20-55 cm. Leaves in basal rosette and cauline, basal leaves 3-5-lobed, cauline (1-3), deeply 3-lobed, usually reduced, similar to basal; stipules narrow, not decurrent on petiole base, (margins fimbriate); petiole to 22 cm; blade dark green, orbiculate to reniform, (base cordate), surfaces variously hairy. Inflorescences 1-9(-15), (often lax), nodding racemes, simple, 3-9(-15)-flowered, (10-60 cm). Pedicels equaling or shorter than hypanthium. Flowers deciduous if unfertilized, not fragrant, horizontal; hypanthium obconic, elongating in fruit, throat constricted or partially open, (length 2 times diam.); sepals erect, often remaining slightly erect in fruit, triangular; petals (exserted), not widely spreading, white with obscure venation, ovate-elliptic, narrowly clawed, usually shallowly 3-lobed, rarely unlobed, (sinuses extending to 1/2 distance to base), 4-13 mm, ultimate margins entire, sometimes with extra tooth, (lobes acute); ovary ± completely inferior; styles included in fruit; stigma papillae in narrow subapical, sometimes apical bands. Seeds 0.5-0.6 mm, smooth, sometimes rough. 2n = 14, 21, 28, 35.
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