Lianas to 10 m, glabrous except for corolla. Branches pale gray. Petiole 0.5-2 cm; leaf blade deep green adaxially, lighter abaxially, narrowly oblong to narrowly ovate, 3-14 X 1.2-5 cm, papery or somewhat leathery; lateral veins 6-12 pairs, usually wrinkled in dry state. Cymes paniculate, terminal or axillary, 3-26 X 3-13 cm, long pedunculate. Sepals ovate, 2-3 mm. Corolla white or yellowish green, pilose inside, tube 3-4.5 mm; lobes falcate, narrowly oblong, as long as or shorter than tube. Stamens inserted at base of corolla tube; disc cup-shaped, shallowly 5-lobed or entire, attached to ovaries. Follicles narrowly ellipsoid, dilated at base, 8-13 X 1.6-3 cm. Seeds tawny, beaked, ca. 2 cm x 6 mm, coma ca. 6 cm. Fl. Apr-Nov.