Rhizomes creeping, branched, brown. Roots fibrous. Leaves linear, 5--20 cm × 4--10 mm at anthesis, 30--40 × 1--1.5 cm in fruit, midvein absent, base surrounded by brown, persistent fibers. Flowering stems slender, 1-leaved; spathes 2, yellowish green, with slightly reddish margin, broadly lanceolate, 2--3.5 cm × 8--10 mm, membranous, 1-flowered, apex obtuse. Flowers violet, 4--4.5 cm in diam. Perianth tube ca. 1.5 cm; outer segments narrowly oblanceolate, ca. 3 cm × 8 mm; inner segments erect, narrowly lanceolate, ca. 3 cm × 3 mm. Stamens ca. 1.5 cm. Ovary ca. 5 mm. Capsule globose, 8--10 mm in diam., 6-ribbed. Fl. May--Jun, fr. Jul--Aug.
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