Perennial herbs 3-4 dm. tall, with short vertical rhizomes and clusters of fleshy subtuberous roots, gla-brous throughout; leaves mostly radical, broadly linear, 12-30 cm. long, 1.0-1.5 cm. broad, white-margined; inflorescence racemiform, usually simple, the flowers in fascicles or solitary, subtended by very conspicuous foliaceous or spathaceous bracts 2-7 cm. long; pedicels 1.5-2.0 cm. long, articulated below the middle; peri-anth segments oblong-elliptic, 1.5-2.0 cm. long, golden yellow with 3 black nerves; staminal filaments about 0.5 cm. long, rugose, the anthers narrowly sagittate, about 0.6 cm. long.
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