Plants perennial, caulescent, not stoloniferous, 5–9 cm. Stems 1–5, prostrate or erect, leafy proximally and distally, usually glabrous, from current and/or previous year’s growth, on usually vertical, fleshy rhizome. Leaves basal and cauline; basal: 3–11; stipules deltate to lanceolate, margins entire, apex acute to acuminate; petiole 2.1–10.5 cm, glabrous or pubescent; blade usually orbiculate to broadly ovate, sometimes reniform, 1.4–5.3 × 1.4–5.3 cm, base cordate, margins crenate to serrulate-crenulate, eciliate or sparingly ciliate, apex usually obtuse, rarely acute, abaxial surface usually glabrous, adaxial surface sparsely pubescent; cauline similar to basal except: stipules lanceolate to ovate, margins usually entire, ciliate; petiole 0.7–1 cm, glabrous or pubescent; blade 1.2–2 × 1.1–1.4 cm. Peduncles 2.7–5.6 cm, glabrous. Flowers: sepals narrow to broadly lanceolate, margins eciliate, auricles 0.5–1.5 mm; upper 2 and lateral 2 petals deep lemon-yellow on both surfaces, lower 3 and sometimes upper 2 brownish purple-veined, lateral 2 usually bearded, lowest 8–17 mm, spur usually yellow, sometimes whitish, gibbous, 1.5–2.5 mm; style head bearded; cleistogamous flowers axillary. Capsules ellipsoid, 6–8 mm, glabrous. Seeds light to dark brown, sometimes mottled with white, 2–2.3 mm. 2n = 24.
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