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Perennial herb; acaulescent, occasionally shortly caulescent. Stems several to many, short. Leaves first erect, later recurved, rigid to flaccid, 0.6-1.4 m x 12-28 mm, strongly keeled; margins and keel serrulate to sparsely toothed, occasionally smooth. Flowers: inflorescence overtopping reflexed leaves, 0.8-1.5 m high, with ovoid or oblong to rhomboid, dense racemes; perianth pinkish red to green, tinged with dull red and erect to spreading in bud, yellow-orange to yellow-green or greenish and pendulous when mature, 25-35 mm long; Jan.-Apr.
Perennial herb. Stems several to many, short. Leaves first erect, later recurved, rigid to flaccid, 0.6-1.4 m long, 12-28 mm wide, V-shaped in cross section, strongly keeled, margins and keel serrulate to sparsely toothed, occasionally smooth. Inflorescence overtopping reflexed leaves, 0.8-1.5 m high, with ovoid or oblong to rhomboid, dense raceme. Flowers pinkish red to green, tinged with dull red and erect to spreading in bud, yellow-orange to yellow-green or greenish and pendulous when mature, 25-35 mm long. Flowering time Jan.-Apr.
Perennial herb. Inflorescence large, oblong to rhomboid. Peduncle up to 1.5 m high. Buds pinkish red to green tinged with dull red. Perianth exceeding 28 mm in length (rarely less). Stamens scarcely exserted. Flowers yellow to yellowish green or green.
Leaves 24–160 cm long, 0.8–2.5 cm wide, linear, acuminate, with margins entire or occasionally sparingly serrulate, very strongly keeled, erect at first, usually becoming bent over.
Rhizome horizontal with closely-spaced erect corm-like branches, the latter usually clothed in fibrous remnants of old leaves; roots fibrous or slightly swollen.
Raceme 5–12 cm long, ovoid or oblong, very dense; bracts 5–10 mm long, ovate-oblong, rounded to subacute, sometimes serrulate; pedicels 2–5 mm long.
Peduncle up to 140 cm long, sometimes with 1–2 sterile bracts below the raceme.
Perianth 25–40 mm long, cylindrical, not constricted above the ovary, straight.
Flowers patent, finally pendulous,yellow or lemon-yellow; buds red to orange.
Plants clump-forming, fairly robust, up to 1.5 m tall.
Stamens just exserted at anthesis, later withdrawn.
Seeds angled, scarcely winged, c. 3 mm long.
Style eventually exserted by 3–8 mm.
Capsule 4–6 mm long, subglobose.
