Climbers, perennial; stem prostrate or creeping, glabrescent, rooting from nodes; leaves reniform, broader than long, obtuse to broadly rounded or somewhat emarginate at apex, cordate base with a broadly rounded lobes, coarsely crenate or entire, glabrescent or sparsely pilose; flowers axillary, solitary or in 2-3 flowered cymes; peduncles very short or absent; sepals-5, free, ovate, pubescent on back, inner long-emarginate, longer than outer ones; corolla yellow, campanulate, tube short, limbs-5, spreading, twisted in bud; stamens-5, epipetalous, filaments stout, almost equal, glabrous at base; ovary 2-4 locular, 4-ovuled, style filiform, stigma globose or bilobed with subglobose lobes; capsules subglobose, 5-6 cm long, black, irregularly or longitudinally dehiscent, glabrous, often 1-seeded cells; seeds oblong, greyish brown, glabrous, about 2-5 mm. long,