Plants annual or biennial, up to 1.5 m tall, pubescent to hairy. Leaves sessile, 5-12.5 x 2.8-7.5 cm, ovate-oblong, sinuate to pinnately lobed, ± semi-amplexicaul, glandular-pubescent, especially on the nerves and margins. Calyx 14-16 mm long, up to 26 mm in fruit, campanulate to infundibuliform, ± urceolate in fruit, nervose, glandular-pilose; lobes triangular, aristate. Corolla (18-) 20-30 mm long, infundibuliform, pale yellow, with brown-purple nerves; lobes ± obtuse, unequal; tube glandular-pilose to the outside. Stamens subexserted, unequal. Lower part of filament pilose, purplish. Style exceeding the stamens in length, purplish. Pyxidium 11-13 mm long, ± pitcher-shaped; operculum usually of a darker colour. Seeds ± 1.2 mm long, reniform, rugose-tuberculate, brown.

Fl. Per.: June-July.

Type: Described from Europe.

Distribution: N. America, N. Africa, Europe, Caucasus, Siberia, S.W. & C. Asia, Iraq, Iran, Afghanistan, Himalaya eastward to Japan.