Glabrous, scandent, perennial herb, sometimes forming a dense tangled shrub up to 2 m tall. Stems usually sparingly branched. Lvs petiolate; petiole ± = lamina, not amplexicaul; lamina not lobed, ovate to deltoid, obtuse to acute, mucronate, obtuse to truncate at base, coarsely toothed with 1-3, convex-sided teeth on each side and lowermost teeth often distinctly larger, c. 30-60 × 25-50 mm; venation palmate-pinnate. Uppermost lvs becoming smaller, narrower, with fewer teeth or entire. Capitula in open, terminal panicles. Supplementary bracts 4-7, linear to subulate, 1.5-2.5 mm long. Involucral bracts 8-11, oblong, 5-6 mm long. Ray florets (4)-5; ligules yellow, 6-11 mm long. Disc yellow. Achenes terete, with hairs on ribs, c. 4 mm long; pappus 5-7 mm long.