Stems 50-100(-130) cm. Cauline leaves glabrous, the lower 10-25(-35) x 4-10(- 20) cm, broadly elliptical, becoming smaller and narrower above. Inflorescence a panicle, branched below, or a simple raceme. Pedicels 3-7 mm. Flowers 9-15 mm in diameter. Perianth segments 3.5-7 x 2.5-4 mm, elliptical to oblong- elliptical, reddish-brown to -black. Capsule glabrous.