Perennial, stellate-hairy herb to c. 1 m tall, forming an extensive, branching root system giving rise to aerial shoots; stems erect, simple or branched, with scattered straw-coloured prickles. Petioles to c. 4 cm long, sparingly prickly. Lamina 4.5-11 × 2-5 cm, lanceolate-ovate or oblong-ovate, densely hairy on both surfaces, coarsely dentate or lobulate; midrib and sometimes lateral veins sparingly prickly; base cuneate; apex acute. Cymes becoming secund, with several fls, often densely hairy; peduncles to nearly 10 cm long, sometimes nearly = lvs; pedicels ± pendent at fruiting. Calyx 4-6 mm long, slightly prickly towards base; lobes broad-ovate, shallow, apparently not accrescent, cuspidate. Corolla 2-3.5 cm diam., white or pale bluish; lobes ovate, densely covered with stellate hairs. Anthers 5-6 mm long. Berry 1-1.5 cm diam., globose, yellow or orange-yellow; stone cells 0. Seed 1.5-2.5 mm diam., reniform to nearly suborbicular.