Liane, evergreen, climbing by curled, tendril-like shoot-tips; stems, inflorescence axes and flowers pubescent or pilose with sparse to dense, straight or flexuose, loosely appressed or spreading, rusty, simple hairs. Leaves alternate; lamina ± concolorous or somewhat discolorous, ovate, (30–) 55–70 (–90) mm long, (15–) 35–50 (–60) mm wide; base symmetric, cordate; margin largely entire but usually with a few small, thick teeth at the base and towards the apex; apex acute, obtuse or acutely to obtusely acuminate; venation penniveined, with primary veins clearly visible below, diverging from the midrib at 35–60°; fully mature leaves sparsely pilose or pubescent abaxially, glabrous or sparsely pubescent to pilose adaxially; petiole (4–) 6–12 (–18) mm long; stipules free, narrowly triangular, acute, 2–5.5 mm long, entire, coriaceous to scarious, abaxially sparsely pilose, adaxially glabrous, caducous. Inflorescences solitary in the upper leaf-axils, comprising 3–many-flowered contracted cymes (appearing as congested clusters) arranged in sparsely branched elongate pseudoracemes; bracts caducous. Flowers bisexual, 5-partite. Pedicels 0.9–2 mm long. Hypanthium cup-shaped, 1.4–2.5 mm diam. Sepals 0.75–1.4 mm long, erect to incurved, persistent on fruits. Petals 0.75–1 mm long, cucullate, not clawed. Stamens subequal to petals, incurved; anthers 0.4–0.5 mm long. Disc conspicuous, lining the hypanthium tube, smooth, glabrous, with margin bearing short, linear lobes adjacent to the sepals. Ovary inferior, 3-carpellate; style 0.8–1.2 mm long, branched. Fruit a pale brown ellipsoid or globular schizocarp, 5.5–8.2 mm long with lateral wings 2–3.5 mm wide, crowned by the persistent sepals. Seeds 2.2–2.7 mm long, uniformly dark brown.
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