Leaves 0.8–1.5 m long, 1.5–2 cm wide at the base, linear acute, strongly keeled, bright green, margins entire.
Perianth c. 7 mm long; tube c. 3 mm long; lobes c. 4 × 1.5 mm, oblong, rounded, becoming reflexed.
Rhizome horizontal with short, well-spaced, erect, shoot-bearing branches.
Stamens exserted for about 4 mm; anthers 1.5–2.5 mm long.
Plants apparently solitary, up to 1–2.5 m tall.
Flowers patent, pale greenish-yellow.
Style exserted for about 4 mm.
Peduncle slender.