Rhizome subterete, 5--7 mm thick. Leaves solitary; petiole 6--7 cm, rather slender; leaf blade ovate to elliptic, 13--17 × 5--6 cm. Scape 3--5 mm; bracts 5 or 6. Flower solitary. Perianth pale yellow adaxially, purple-red abaxially, 6-parted apically; tube ca. 1 × 1.8 cm; lobes suberect, ovate-lanceolate, (1.7--)2--2.5 cm × ca. 5 mm, rather thick. Stamens 6, inserted at base of perianth tube, subsessile; anthers oblong, ca. 2 mm. Pistil ca. 7 mm; style ca. 5 mm, thickened, 12-ribbed; stigma peltate, large, 1--1.2 cm in diam., slightly 12-lobed at margin. Fl. Mar--Apr.
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