Rhizomes branched; roots fleshy-fibrous to narrowly tuberous, elongated. Leaves 15-40 cm long; lamina 3-15 mm wide, arching; sheath papery. Inflorescence to 60 cm tall; axis slender, 1-5-branched; lower bracts to 30 cm long; clusters 2-5-flowered, the lowest subtended by leaf-like bracts to 30 mm long; upper bracts triangular-acuminate, down to 3 mm long; pedicels slender, 4-13 mm long. Perianth segments narrowly elliptic, 6-10 mm long, white with green or purple nerves abaxially. Stamens to 5 mm long; anthers c. 1 mm long; filaments narrowly fusiform, whitish. Capsule ±angular-lobed, 4-8 mm wide. Seed 1.8-2.8 mm wide; testa finely granulate and often with scattered pustules, dull.
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