Coarse climber to massive liane, the stems up to 0.8–1.2 cm. diameter, often spotted with deep blackish crimson spots, ± glabrous, usually flowering when almost leafless; tendrils branched.. Leaves often purplish beneath, very variable, ± round or ovate-cordate in outline, 10–27 cm. long, 10–32 cm. wide, entire or more usually deeply 3–5(–7)-lobed, truncate to cordate at the base, margin sparsely obtusely to acutely dentate, venation beneath pubescent to hispidulous but otherwise leaf ± glabrous; petiole 5–20 cm. long, grooved; stipules elongate-triangular, 3–5 mm. long, obtuse or subacute, sometimes laterally expanded at the base and 5–10 mm. wide, glabrous except for ciliate margins.. Flowers in panicles 10–20 cm. long; axes densely pubescent; peduncle 7–12 cm. long; pedicels ± 1 mm. long, pubescent; bracts and bracteoles triangular, 1–2.5 mm. long.. Calyx cupuliform, 0.7–1 mm. long, entire or slightly lobed, glabrous.. Corolla ? green; petals oblong, 2–2.5 mm. long, obtuse, glabrous.. Ovary glabrous.. Fruits in bunches to 25 cm. long, oblong-ellipsoid, 1–1.5 cm. long, glabrous.. Seeds flattened ellipsoid-ovoid, 9–11 mm. long, 6–7 mm. wide, little beaked, the groove not marked, keel narrow, testa finely irregularly rugose.. Fig. 1/1–11, p.4.
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A climbing herb. It develops annual angular branches and with lines along them. The leaves are rounded or heart shaped. The fruit are small berries than occur in large bunches. They have a sharp and penetrating taste.
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