Perennial; rhizome vertical, rather stout, bearing leaves and stems at apex. Stems up to 26 cm, rather slender, creeping or somewhat ascending, rooted at some nodes, bearing leaves along their length and flowers usually distally. Leaves ½-2½ by ¾-3 cm, 1-1.6 times as broad as long, triangular-ovate, rarely subhastate, shallowly and rather broadly cordate at base, acute to obtuse or rounded, crenate or subden-tate, glabrous or sparsely pubescent on veins towards sinus, subcoriaceous, dark green. Stipules 5-10 by 1-2 mm, lanceolate, acute, fimbriate, glabrous, fuscous, free. Flowers 6-12 mm, purple with darker veins; peduncle 2-9 cm, exceeding leaves, sparsely hirsute distally. Sepals 4-5½ by 1½-1.8 mm, ovate-lanceolate, acute, entire, glabrous or sparsely pubescent near base, green with scarious margin; appendage ½-1 mm, rounded or slightly dentate. Petals about 3 times as long as broad, oblong to obovate-oblanceolate; laterals heavily, rarely lightly bearded; spur ½-1½ mm, shorter than to slightly exceeding calycine appendages, cylindrical, obtuse. Style 1½-2 mm, geniculate at base, clavate distally, apex with flattish marginal lobes fused behind and anterior stigmatic beak. Capsule 5-9 mm, oblong, glabrous.
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