It is a herbaceous perennial plant growing to 40-60 cm tall, with spirally arranged leaves 6-12 cm long and 4-9 cm broad. The flowers are white, with a five-lobed corolla 10-15 mm across, with an inflated basal calyx which matures into the papery orange fruit covering, 4-5 cm long and broad.
It is a popular ornamental plant, though can be invasive with its wide-spreading root system sending up new shoots some distance from where it was originally planted.