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Leaves opposite or subopposite; petiole (0)2–6(10) mm long; lamina thinly coriaceous, dull to dark green or sometimes slightly blue-green, mostly 4–12 × 2–5 cm, lanceolate to ovate-elliptic or elliptic, narrowed or slightly acuminate to the obtuse or subacute apex, cuneate to rounded or rarely cordate at the base, lowest on flowering branchlets smaller and more obovate, with 6–12 pairs of lateral nerves, 2–several lower ones more strongly ascending.
Corolla 3.5–5(5.5) cm long, white at base, then pink or orange, banded green-yellow just below vents, yellow or yellow and red over vents, with green tip; apical swelling 3.5–5 × 2–2.5 mm, obovoid-ellipsoid, slightly apiculate, angular to slightly ribbed; basal swelling slight; lobes erect, 8–10(12) mm long, the upper expanded part 3.5–4(5) × 1–1.2(1.5) mm, oblong-elliptic.
Umbels solitary in the axils or terminal on short shoots, 8–16-flowered; peduncle 0.8–2.5(4) cm long; pedicels 1–3 mm long; bracts shallowly cupular with an enlarged limb; limb 6–20 × 3–5 mm long, lanceolate to oblanceolate or foliaceous, flat or boat-shaped, sometimes slightly to conspicuously spurred from the back.
Stems spreading to 1–2 m, often with rather short lateral branches; branchlets flattened, becoming terete or 4-angled to slightly winged; plant glabrous except sometimes for short hairs in axils, on umbels and bracts.
Stamen filaments red below, yellow or green above; tooth 0.5–0.8 mm long; anthers 1.5–2(3) mm long.
Style green above, slender, isodiametric; stigma 0.6 mm across, capitate.
Berry red, 7–8 × 4.5–5 mm, oblong-ellipsoid; seed bright yellow.
Receptacle 1–1.5 mm long.
Calyx 0.6–1 mm long.
