Rhizome subterete, 4--8 mm thick. Leaves solitary; petiole 27--45 cm; leaf blade sometimes with yellowish white spots, oblong to oblong-lanceolate, 20--40 × 3--6 cm. Scape 1--6 cm; bracts 4--6. Flower solitary. Perianth urceolate, 6--8(or 9)-lobed apically; tube purple-brown adaxially, purple abaxially, 0.8--1.2 × 1--2 cm; lobes recurved, white or yellowish white adaxially, purple abaxially, deltoid-ovate, 5--6 × 4--5 mm, with 2 short, papillose keels near adaxial base. Stamens 6--8(or 9), inserted at base of perianth tube, subsessile; anthers ca. 2 mm. Pistil 4--6 mm; stigma peltate, orbicular, large, 1--1.5 cm in diam., 6--8(or 9)-lobed at margin. Berry ca. 1.5 cm in diam., tuberculate. Fl. Sep. 2 n = 38*.
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