Shrub to 5 m high, often sprawling and branched towards base. Leaves linear, not or only slightly narrowed towards base, 35–50 cm long, 1–2 cm wide; margins smooth. Panicles 20–40 cm long; scape 15–30 cm long; pedicels 1.5–2.5 mm long. Perianth glabrous; petals 8–9.5 mm long, 1.5–4 mm longer than sepals. Fruit 1–1.5 cm diam., black.