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Leaves: petiole glabrous or with scattered hairs, 2–7 mm. long; lamina shining and dark green above, paler and mat or slightly shining beneath, often thickly coriaceous (thinner in the shade) also when fresh, elliptic, narrowly elliptic, or narrowly ovate, 1–5–3 times as long as wide, extremely variable in size, (2)4–10(16) x (1)2·5–5(8·5) cm., acute, shortly acuminate, or sometimes rounded or subtruncate at the apex, rounded or cuneate at the base; glabrous or rarely with few hairs near the base beneath; one pair of secondary veins from above the base curved along the margin and often also with a faint submarginal pair; tertiary venation reticulate, prominent on both sides in dry leaves.
Corolla in the mature bud 2·2–2·5 times as long as the calyx, 5·5–7·5 mm. long, and rounded at the apex, pale green–yellow, glabrous outside, inside with a white densely sericeous–villose ring in the throat; tube nearly cylindrical, 1·2–1·4 times as long as the calyx, 0–9–1·5 times as long as the lobes, at the base 1·5–1·8 mm., at the throat 1·5–2·5 mm. wide; lobes thicker towards the apex, oblong, 2–3·3 x as long as wide, 2·4 x 1–1·2 mm., acute at the apex, spreading.
Sepals green, connate at the very base, usually subequal, ovate or broadly ovate, 1·2–1·5 times as long as wide, (1·7)2–3 x 1·5–2·2 mm., rounded or sometimes obtuse at the apex, ciliate, glabrous on both sides, without colleters.
Pistil pilose or hirto–pilose in the middle, 4·5–6 mm. long; ovary ovoid, 1·5–2·5 x 1–1·5 mm., glabrous at the base, usually gradually narrowed into the style, 2–celled; style glabrous at the apex, 3–4 mm. long; stigma capitate.
Seed pale brown or ochraceous, obliquely elliptic, ovate, ellipsoid, or more or less tetrahedral, 1 x 7·5 x 4–21 x 14 x 5 mm., mostly somewhat thickened at one side in the middle, rough, minutely scabrid–pubescent.
Fruit orange or yellow, nearly mature glaucous, small or rather large, globose, 1·5–7 cm. in diam., hard when not small, (1)10–30(45)–seeded. Wall 1–3 mm. thick when dry. Pulp orange or yellow, slimy.
Stamens slightly exserted; filaments glabrous, very short, inserted at the mouth of the corolla tube; anthers oblong, 1–2 x 0·5–0·6 mm., sagittate at the base, glabrous; cells parallel.
Inflorescence axillary, 3–20–flowered, rather congested or lax, pubescent with brown hairs or sometimes glabrous, shortly pedunculate, 1·5–5 x 1·5–4 cm.
Trunk 2–5 cm. in diam., or more; bark dark grey, lenticellate, pale grey–brown to black; branchlets glabrous or occasionally pubescent.
Climbing shrub or liana, 3–20 m, high climbing, up to at least 30 m. long.
Flowers 5–merous, sessile or shortly pedicellate.
In each cell 15–25(30) ovules.
Tendrils paired.
