Erect annual, up to 65 cm tall, puberulous. Leaves very variable on the same plant, linear, narrowly oblong, ovate or lanceolate, entire, subentire, lobed or 3-partite, acute, 3-18 cm long, 0.5-4 cm broad, glabrous above, pubescent below, petiole 0.5-12 cm long. Flowers with strong unpleasant odour, bracteate; pedicel up to 5 mm long with 2 glands on either side at the base. Calyx 2-6 mm long, lobes linear to narrowly lanceolate, hairy, persistent. Petals 2-3 cm long, pubescent, obtuse. Stamens c. 1 cm long. Ovary 1-2 mm long, pilose, oblong. Fruit oblong, loculicidal, acuminate capsule, 1.5-2.5 cm long, 5-7 mm broad, slightly scabrid-¬pilose. Seeds black, brown or white, 2-3 mm long, 1-1.5 mm broad, wingless, almost smooth.
Flowering Period: June-October.