Plants acaulescent, cespitose; rosettes from vertical, subterranean branched caudices. Leaf blades wiry, stiff, triangular, slightly concavo-convex toward base, 40–90 cm × 2–4(–7) mm, not glaucous; margins entire, rarely remotely serrate with widely separated, noncartilaginous teeth, tips dying; inflorescence leaf blades curling distally, 10–50 cm. Scape curling distally, 0.5–2 dm. Inflorescences paniculate, rarely purple, 2.5–7 dm × 5–17 cm, held completely or partially within rosettes; main rachis and divisions thick, rigid, lateral branches ascending; bracts persistent, to 10–40 cm; bractlets laciniate, 1–2 mm. Flowers: tepals yellow-green, 2.5–3.5 mm; fertile stamens: filaments 0.9–1.4 mm, anthers 0.8–1 mm; infertile stamens: filaments 0.6–0.8 mm, anthers 0.4–0.5 mm; fruiting pedicel ascending, thick, articulate near base, noticeably dilated into perianth, proximal to joint 2.5–6 mm, distal to joint 1.5–2 mm. Capsules thin-walled, inflated, 3–4 × 4.5–5.5(–8) mm. Seeds closely invested in capsules, rounded, bursting ovary walls, 2.6–3.4 mm diam. 2n = 38.
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