Large twining shurb, branches terete, whitish green; leaves opposite, oblong, ovate or elliptic, apiculate or acuminate at apex, usually acute at base, shining above glaucous beneath, coriaceous; nerves more than 7 pairs; flowers in terminal or axillary, slender, dichotomous, peduculate cymes; bracts ovate or lanceolate with scarious margin; calyx deeply 5-fid with five scales within, lobes ovate, acute; corolla greenish-yellow, tube short, cylindric or bell shaped, lobes linear, twisted, overlapping to the right in bud, coronal scales-5, clavate, fleshy; stamens attached towards the base of the corolla tube, filaments subconnate by their broad bases; anthers short, sagittate, connivent over style apex; ovary with 2 to many ovules; stigma broadly conical; follicles stout, straight, terete, smooth, tapering; seeds compressed, oblong, black; coma about 3 cm long.