Stoloniferous perennial herb, glabrous to pubescent. Leaves tufted; lamina reniform to more or less semicircular, 5–35 mm long, 5–50 mm wide, base broadly cordate, truncate or rarely somewhat cuneate, apex obtuse, margins entire to scalloped or broadly toothed; petioles 2–8 cm long; stipules free, linear-lanceolate, 2–8 mm long, laciniate. Flower-scapes (3–)6–17 cm long, mostly subequal to or exceeding leaves, bracteoles near middle. Sepals lanceolate, 3–6 mm long, acute, basal appendages small; petals 7–10 mm long, 2-coloured, mauve-violet and white, the boundary between the two colours diffused, lower (anterior) petal obovate, lacking a spur, the central 3 longitudinal nerves not strictly parallel and often anastomosing, lateral petals bearded (very rarely glabrous), twisted through approximately 90 degrees. Capsule ovoid, 4–6 mm long. Seeds ovoid, 1.2–2 mm long, dull, mottled cream and brown to uniformly reddish-brown. Flowers mostly Oct.–Dec.