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Information Large liane. Young stems glabrous or pubescent, bark of older twigs smooth, grey, with dot-like lenticels. Leaves thinly coriaceous, glabrous, drying ± concolorous dull brownish green; petioles 2–8 mm. long. Leaf-lamina c. 4·5–7·5 x 1·5–3 cm., elliptic or slightly obovate, apex acute or shortly acuminate, with or without an ill-defined apiculus, base attenuate; margin slightly revolute; venation characteristic: main lateral nerves numerous (8–11-paired), venation inconspicuous on upper leaf surface, prominent and conspicuous below. Inflorescences several- to many-flowered, lax, with peduncle 1–7 mm. and pedicels 4–10 mm. long; corolla creamy-white tinged with maroon on the outside. Calyx 1·5–3 mm. long, glabrous or pubescent, ciliate; sepal scales simple or paired. Corolla tube 4·5–6·5 mm. long; corolla lobes 9–13 x 3·5–5·5 mm., 2–3·5 times as long as broad, ± oblanceolate, glabrous on outer surface, densely pubescent on inner surface except where overlapped by next petal. Stamens inserted at 2–2·5 mm. from the base of the corolla tube (at ± 1/2 of its height); anthers c. 3 mm. long, pubescent on dorsal surface. Ovary c. 1 mm. long. Mature follicles and seeds unknown.

Information Liana 3–15 m high with white latex; branches dark brown with large pale brown lenticels; branchlets glabrous or puberulous. Leaves petiolate; blade (narrowly) elliptic, 3–9 cm long, 1–5 cm wide, bluntly acuminate to obtuse at the apex, cuneateor rounded at the base, glabrous on both sides or puberulous beneath; with 11–14 pairs of rather straight secondary veins at an angle of 40–50° with the midrib; petiole 2–5 mm long, glabrous or puberulous. Inflorescence terminal, few- to many-flowered, 2–5 cm long, glabrous or puberulous; peduncle 1–18 mm long; bracts sepal-like; pedicels 5–15 mm long. Flowers with sepals ovate, up to 2.8 mm long, with 1–2 colleters near the edge inside; corolla white or greenish white; tube often partly reddish, throat red; mature bud with a narrowly ovoid head about twice as long as the tube; tube 4–6.5 mm long; lobes twisted in bud, spoon-like with a shallow concave apex, obliquely obovate or elliptic, 9–14.5 mm long, 3–5.5 mm wide, rounded at apex; stamens inserted 2.2–4 mm from the base; style 2–2.2 mm long. Fruit brown, 40–50 cm long, 0.5 cm in diameter; seed up to 15 mm long; coma 3 cm long.