Herb 1–2 m. tall; stems crisped-pubescent or tomentose and with sparse to dense stellate or simple bristles. Leaf-lamina 3·5–12 × 2·5–10 cm., ovate, broadly ovate or suborbicular, pubescent to densely pubescent with few to numerous branched or simple bristles mainly on the lower surface, apex acute, margin serrate, base cordate, truncate or broadly cuneate; petiole up to 8·5 cm. long, hairy like the stems; stipules up to 5 mm. long, filiform. Flowers up to 5 cm. in diam., yellow with reddish or purple centre, solitary, axillary; peduncle up to 4 cm. long, articulated above the middle. Epicalyx of c. 10 bracts; bracts up to 12 mm. long, filiform, usually extending beyond the sinuses formed by the calyx-lobes. Calyx up to 25 mm. long; lobes elongate-acuminate, joined at the base for up to 8 mm. Petals up to 3 × 2 cm., obovate-elliptic, stellate-pubescent outside where not overlapping. Staminal tube c. 18 mm. long; free parts of filaments 0·5–1·5 mm. long. Style-branches 2 mm. long. Capsule 12 × 10 mm., subglobose, densely pubescent; awns of the carpels up to 5 mm. long. Seeds 2·3 × 1·8 mm., angular-subreniform, sparsely white-lepidote.