Annual twiners; stem slender, glabrous; leaves alternate, pinnate, cleft to midrib, linear, distant segments 8-20 pairs; petioles often with pseudo stipules at base; flowers axillary or few flowered cymes; bracts minute, deltoid, acute; sepals-5, unequal, elliptic-oblong, mucronate at the apex, glabrous; corolla tubular-funnel shaped, about 2-3 cm long, scarlet red, glabrous, tube long, narrow, tapering towards base, lobes ovate, acuminate; stamens 5, exserted, filaments hairy at base; ovary 4-celled; style long, slender; stigma globose or 2-lobed; capsules ovoid, smooth; seeds 4 or less, dark brown, minutely hairy or sometimes glabrous.