Perennial; Leaves ¾-1¼ by 1-2½ cm, 1¼-2times as broad as long, reniform to broadly ovate, more or less deeply cordate, rounded to broadly obtuse, subcrenate to repand-dentate, especially on lobes, subcoriaceous, glabrous beneath, sparsely hirsute towards margins and on veins above, dark green; Stipules 2-4 by 2-3 mm, ovate, acute, entire to sparsely denticulate, glabrous, fuscous, free. Flowers 8-12 mm, yellow with brownish-purple veins; Sepals 3-4 by c. 1 mm, linear to linear-oblong, acute, glabrous or shortly ciliate on margin, fuscous, with margin scarious; Petals 2-3 times as long as broad, obovate to almost oblong, basal exceeding the others, laterals not bearded; Capsule 4-6 mm, oblong to ellipsoid, glabrous.
Asia-Temperate: Korea present, Asia-Tropical, Circumboreal, south to 40° N in North America, to c. 38° N in Europe present, Himalayas present, Japan present, Mt Kemiri present, Mt Losir present, N. Sumatra present, Southern America: Argentina Northeast (Formosa present)
Circumboreal, south to 40° N in North America, to c. 38° N in Europe. Through Himalayas to Japan, China, Korea, and Formosa, in Malesia: N. Sumatra (Mt Losir and Mt Kemiri). .