Glabrous, scrambling or scandent herb. Stems branched or not, up to 3 m or more long. Lvs petiolate; petiole ± = lamina, usually with small auricles, 2-13 mm diam. at base, sometimes auricles 0. Lamina not lobed, ovate, deltoid or ± orbicular, acute, usually cordate at base, sometimes truncate, coarsely toothed with 2-5-(6), flat or concave-sided teeth on each side, 25-100 × 20-100 mm; venation palmate. Uppermost lvs becoming smaller. Capitula in dense terminal or axillary panicles. Supplementary bracts 2-4, linear, 1.5-3 mm long. Involucral bracts 8-9, oblong, 3-4 mm long. Ray florets 0. Disc yellow, 5-7 mm diam. Achenes terete, glabrous or with scattered hairs on ribs, 2-2.5 mm long; pappus 4-5 mm long.