Herbs perennial, caulescent, rhizomes present, <with horizontal, white, fusiform tubers or tuberlike thickenings>, stolons absent, bulbs absent. Aerial stems 1(–3) from base, erect, 15–40 cm, herbaceous, glabrate to sparsely to densely villous, <hairs ± straight, spreading, septate and nonseptate>. Leaves cauline; stipules rudimentary; petiole 4–7.5 cm, <hairs septate and nonseptate>; leaflets 3, green, obcordate, (12–)20–30(–35) mm, lobed 1/5 length, <lobes apically truncate, margins green, ciliate>, surfaces glabrous, oxalate deposits absent. Inflorescences regular or irregular cymes, 1–3(–6)-flowered; peduncles 3–10 cm. Flowers tristylous, <mostly at level of leaves>; sepal apices without tubercles; petals yellow, with prominent red lines proximally, 12–18 mm. Capsules oblong-ovoid, 7–10 mm, sparsely puberulent to villous. <Seeds brown, transverse ridges brown>.
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