Perennial climbing shrub; branches terete, internodes densely pubescent; leaves opposite decussate, lamina broadly ovate-lanceolate acuminate at apex, oblique or deeply cordate at base, pubescent when young, lateral veins 4-6 pairs; flowers many drooping in lateral umbelliform cymes; bracts linear, pubescent, pedicles terete, slender pubescent; calyx divided up to base, lobes-5, ovate, apex acute, margin ciliate, pubescent glandular within; corolla lobes oblong apex obtuse or cupular, notched; staminal corona uniseriate, 5 lobed, segments large, fleshy; stamens 5, corona single of 5-fleshy, truncate, lobes or scales attached to the upper part of staminal column which arise near the base of corolla; follicles paired, ovoid, tapering to a very blunt point, velvety when young, brown, tomentose; seeds many, ovate, base rounded, yellow with pink, coma silky-white.