A scandent shrub, glabrous except the inflorescences. Young branches rather slender, brown or blackish when dry, smooth; lenticels few and minute. Leaves lanceolate to oblong, acute or subcuneate at the base, abruptly acuminate (acumen linear, obtuse, up to 6 lin. long), 3 1/2–5 1/2 in. long, 1 1/4–1 3/4 in. broad, coriaceous, fuscous when dry; midrib slightly sunk above, raised below; secondary nerves about 4–6 to an inch, fine, very faintly raised on both sides; veins quite obscure; marginal arches close to the margin without an outer marginal nerve; margin revolute; petiole 4 lin. long. Cymes (exclusive of the corollas) as long as the petioles or slightly longer, 5- to many-flowered, minutely and scantily pubescent; bracts minute; pedicels up to 2 lin. long, slender. Calyx slightly over 1/2 lin. long, glabrous; sepals ovate, subacute or obtuse, ciliolate. Corolla white, glabrous except the ciliolate lobes; tube about 3 1/2 lin. long, subcylindric, slender, slightly widened just above the calyx; lobes linear, subacute, 3–3 1/2 lin. long. Stamens inserted near the base; filaments very short; anthers oblong, subobtuse. Ovary turbinate-globose, truncate, top pubescent; style distinct, cylindric, very short; stigma clavate, slightly longer than the style.
