Rhizome terete, 6--12 mm thick. Leaves solitary; petiole 10--35(--40) cm; leaf blade sometimes with yellowish white spots, lanceolate to elliptic-lanceolate, 20--35 × 4--8 cm. Scape 0.5--5 cm. Flower solitary. Perianth subcampanulate, (6--)8-lobed apically; tube brown-purple adaxially, purple abaxially, 7--9 × 0.9--1.5 cm; lobes recurved, purple-red, deltoid-lanceolate, 3--6 × 2--3 mm, adaxially 4-keeled, keels densely papillose. Stamens (6--)8, inserted proximally in perianth tube, subsessile. Stigma peltate, orbicular, large, 0.8--1.2 cm in diam., slightly convex centrally, 4-ridged, (3 or)4-lobed at margin, lobes emarginate at apex. Berry tuberculate. Fl. and fr. Jan--Mar. 2 n = 38*.
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