Plants acaulescent, cespitose; rosettes from vertical, subterranean, branched caudices. Leaf blades wiry, carinate, flat or concavo-convex, 100–200 cm × 5–10 mm, not glaucous; margins remotely serrulate, with widely separated, noncartilaginous teeth, to entire; apex lacerate. Scape 1–3 dm. Inflorescences paniculate, rarely purple, 4–7 dm × 12–18 cm; main rachis and divisions thick, rigid, lateral branches spreading; bracts persistent, to 45 cm, apices curling; bractlets slightly erose, 1.5–5 mm, apex aristate. Flowers: tepals 2–2.8 mm; infertile stamens: filaments to 1 mm, anthers to 0.4 mm; fruiting pedicel erect, thick, articulate near base, noticeably dilated into perianth, proximal to joint 2–3.5 mm, distal to joint to 1.5 mm. Capsules firm-walled, inflated, 2.5–3.3 × 5–6.2 mm, broadly rounded distally. Seeds closely invested in capsules, bursting ovary walls, 3 × 4.3 mm diam.
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