Rhizomes creeping, branched, 3--5 mm in diam. Roots fibrous. Leaves green or grayish green, linear, 7--25 cm × 1--3 mm, parallel veins 3--5, base surrounded by maroon-brown fibers, apex long acuminate. Flowering stems 2--20 cm, slender, 2-or 3-leaved; spathes 2, green, reddish purple at margin, lanceolate or broadly so, 2--3.5 cm × 8--10 mm, 1-flowered. Flowers violet, 3--5.5 cm in diam.; pedicel 6--10 mm. Perianth tube 0.5--1.5 cm; outer segments with white-and deep purple-mottled patterns, oblanceolate, ca. 4 cm × 8--10 mm; inner segments erect, narrowly oblanceolate, 3.2--3.5 cm × ca. 6 mm. Stamens ca. 2.5 cm; anthers milky white. Ovary ca. 1 cm. Style branches 3.5--4 cm. Capsule globose to ovoid, 1.2--1.5 cm, 6-veined, apex not beaked. Seeds globose or pyriform, with milky white aril. Fl. May--Jun, fr. Jul--Aug. 2 n = 84.
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