Herbs perennial. Rhizome long creeping to ascending, slender, acaulescent. Stipules lanceolate, 5-10 × 1-2 mm, glabrous, membranous, ca. 2/3 adnate to petiole, margin slightly laciniate-serrate or entire, apex acute; petiole 2-11 cm, glabrous; leaf blade triangular-cordate, 1.2-2.8 × 2-3.8 cm, herbaceous to papery, glabrous or puberulous on both sides, base reniform-cordate, with basal lobes somewhat converging, margin shallowly serrate, wingless, apex acute to obtuse. Flowers nearly white, with dark violet veins, 1-1.5 cm in diam.; pedicels 4-10 cm, exceeding leaves, slender, glabrous or sparsely puberulous. Sepals ovate-lanceolate to lanceolate, 3.5-6 × 0.8-1.5 mm, glabrous, margin entire, apex acute; appendages ca. 1 mm, rounded. Petals obovate to oblong, lateral ones glabrous, anterior one equaling others, apex rounded; spurs cylindric, 2-3 mm, slender, rounded. Styles 2-2.7 mm, base slightly geniculate, clavate distally, apex slightly lobed on both sides; stigmas beaked. Capsules oblong or ellipsoid, 6-9 mm, glabrous. Seeds ovoid, ca. 2 mm. 2n = 24*.
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