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Herb or soft-wooded shrub, 0·75–1·5 m. tall, annual or biennial, softly velutinous; stems terete, green or grey-green to olive, branched from the base, the older parts glabrescent and somewhat woody. Leaf-lamina up to 15 cm. long and 14 cm. broad but often much smaller, broadly ovate-cordate, green, lower surface slightly paler, usually long-acuminate with narrow acumen, margin rather coarsely and irregularly serrate to doubly serrate; petiole generally about as long as the corresponding lamina. Flowers axillary on main branches; pedicels up to 8 cm. long, articulated in the upper 11 mm. Calyx 15–17 mm. long, cupuliform, not much accrescent in fruit, lobed a little beyond the middle; lobes triangular to ovate-lanceolate, attenuate-acuminate into a sharp apex. Petals 15–20 mm. long, yellow. Staminal tube velutinous towards the base. Fruit c. 13 × 20 mm., depressed-globose, truncate to shallowly umbilicate, softly stellate-pilose and shortly stellate-pubescent. Mericarps c. 20, 2–3-seeded, the dorsal apical angle triangular-pointed to shortly awned, the back and a narrow zone along the upper edge with more or less pilose hairs, the lateral flat sides finely stellate-pubescent. Seeds c. 2 × 1·75 mm., punctate-lepidote, glabrous except for a tuft of hairs near the hilum.