Plants perennial, caulescent, not stoloniferous, 2–18 cm. Stems 1–5, decumbent or ascending to erect, leafy proximally and distally, ca. 1/2 subterranean, glabrate to puberulent, on caudex from usually vertical, subligneous rhizome. Leaves basal and cauline; basal: 1–6; stipules adnate to petiole, forming 2 linear-lanceolate wings, margins entire, apex of each wing free, sometimes divided into filiform processes; petiole 3–10 cm, glabrous or puberulent; blade ovate to oblong-ovate, 1.5–4.3 × 0.9–1.1 cm, base usually truncate, sometimes attenuate, margins entire or serrulate, sometimes sinuate, ciliate (sometimes only on proximal 1/2 of leaf), apex acute to obtuse, surfaces glabrous or puberulent; cauline similar to basal except: stipules linear to linear-lanceolate, margins ± entire, apex acute; petiole 1.5–9.2 cm; blade ovate or lanceolate to elliptic, 2.3–4 × 1–2 cm, length ca. 2.2 times width, base usually ± truncate to subcordate, sometimes attenuate on new leaves, margins sinuate, apex acute. Peduncles 3–11.5 cm, glabrous or puberulent. Flowers: sepals lanceolate, margins eciliate, auricles 0.5–1 mm; petals deep lemon-yellow adaxially or on both surfaces, upper 2 often brownish purple abaxially, lower 3 dark brown-to brownish purple-veined, lateral 2 sparsely bearded, lowest 9–14 mm, spur yellow, gibbous, 0.8–1.2 mm; style head bearded; cleistogamous flowers axillary. Capsules spherical, ca. 5 mm, glabrous or finely puberulent. Seeds tan, 2.1–2.2 mm, elaiosome extending beyond and covering funiculus. 2n = 12.
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