Rhizome subterete, 6--8 mm thick, densely covered with scales. Leaves solitary, much spaced; petiole (15--)25--50 cm; leaf blade elliptic, 17.5--30 × 5.5--8.5 cm, apex long acuminate. Scape 0.9--3.5 cm; bracts 3--5, white, speckled with purple. Flower solitary. Perianth campanulate, 6-lobed apically; tube white, sometimes speckled with purple, 8--11 × 6--7 mm; lobes reflexed, purple, ovate, 4--5 × 3--4 mm. Stamens 6, inserted just above middle of perianth tube, positioned nearly level with stigma, subsessile; anthers oblong, 4.5--5.5 mm. Pistil purple, 7--9 mm; stigma scarcely enlarged, slightly concave and white adaxially, 3-lobed at margin. Fl. Nov. 2 n = 36*.
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