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Leaves subsessile or shortly petiolate; petiole hirto–pubescent, up to 3 mm. long; lamina shining and dark green above, paler beneath, coriaceous also when fresh, variable in shape and size, ovate, narrowly ovate, elliptic, narrowly elliptic, cordate, or subcircular, comparatively wider on the main axis and at the bases of the branchlets, 0·75–3 times as long as wide, 8–50(67) x 6–30 mm., acute, or shortly acuminate, often apiculate, rarely obtuse at the apex, cordate, rounded, or cuneate at the base, glabrous, except for a few hairs on the costa beneath and sometimes above, with one or two pairs of secondary veins from or from just above the base curved along the margin, outer pair usually fainter; tertiary venation not very conspicuous, prominent on both sides in dry leaves; costa impressed above.
Corolla in the mature bud 3–4 x as long as the calyx, 3·5–5 mm. long, white, greenish, or creamy, outside glabrous, inside pilose in the throat and at the base of the lobes; tube campanulate, short, 0·8–1·2 x as long as the calyx, 1–1·7 mm. long; lobes thick 2–3 x as long as the tube, oblong, 2·3–3 x as long as wide, 2·5–3·5 x 1–1·4 mm., acute, recurved.
Sepals subequal, connate at the base, ovate or broadly ovate, 1–1·5 x as long as wide 1–1·5 x (0·6)0·8–1 mm., obtuse at the apex, ciliate, glabrous on both sides (or outside at the base occasionally with a single minute hair), without colleters.
Seed pale brown or pale ochraceous, flattened, more or less plano–convex, obliquely elliptic or subtetrahedral, about 1·2 x as long as wide, 7 x 5 x 1·5–10 x 7 x 3 mm., rough, with scabrid short hairs.
Stamens well–exserted; filaments 1·2–2 mm. long, inserted at the mouth of the corolla tube; anthers oblong, 1·2–1·5 x 0·6–0·9 mm., glabrous or bearded with a single pilose hair at base.
Pistil pilose in the middle, 3·5–4 mm. long; ovary ovoid, pilose at the apex, 1–1·5 x 0·9–1 mm., 2–celled; style thick, glabrous at the very apex, 2·3–3 mm. long; stigma capitate.
Inflorescence terminal and at the same time axillary, rather lax, few– to many–flowered, 1·5 x 1·5–3 x 3 cm., 2–3 times branched. Peduncle, branches, and pedicels slender.
Fruit yellow, small, soft, subglobose, 8–18 mm. in diam., with (1)3–6 seeds, with a smooth skin, slightly shining, often mucronate by the style. Wall thin.
Branches lenticellate, twining, terete, pale to dark brown and not sulcate when dry; branchlets hirto–pubescent, terete, often slightly sulcate when dry.
Scandent or scrambling evergreen shrub or liana, 3–20 m. high.
Testa not sticking to the pulp.
In each cell 10–12 ovules.
Pedicels 2–4 mm. long.
Flowers 5–merous.
Tendrils paired.
