A small, glabrous shrub; branches very slender, greenish-brown, with scattered wart-like lenticels. Leaves oblong, long acuminate (acumen subobtuse, sublinear up to 9 lin. long), acute at the base, 3–5 1/2 in. long, 1 1/4–1 3/4 in. broad, herbaceous, thin; secondary nerves much spreading, curved, 10–11 on each side, very slender; transverse veins subhorizontal, faint; petiole 1/2–1 lin. long or hardly any. Inflorescences geminate from the branch-forks, few-flowered, umbelliform or subcorymbose, lax, shorter than the leaves, ebracteate; peduncles finely filiform, 1 1/2 in. long; pedicels very slender, 4 lin. long. Calyx 5-partite almost to the base, 1 lin. long; sepals ovate, acute, very minutely ciliolate, with 1–2 glands inside the base. Corolla-tube subcylindric, narrowed from the middle upwards, 3 1/2–4 lin. long; lobes rotundate-obovate, 2–2 1/2 lin. long. Stamens inserted at the middle. Anthers 1 1/4 lin. long. Style 1 1/2 lin. long.