Rhizome subterete, 6--12 mm thick. Leaves solitary; petiole 30--50 cm; leaf blade with yellowish white spots, elliptic to oblong-elliptic, 25--35 × 6--9 cm. Scape 0.6--1.5 cm; bracts 2 or 3. Flower solitary. Perianth dark purple, subcampanulate, 8-lobed apically; tube 1.1--1.4 × 1.4--1.6 cm, adaxially papillose; lobes slightly recurved, oblong to deltoid, 5--6.5 × 4--5 mm, adaxially papillose. Stamens 8, inserted proximally in perianth tube; filaments ca. 1.5 mm; anthers ovate, ca. 2 mm. Pistil ca. 5 mm; stigma peltate, cross-shaped, large, 1.2--1.4 cm in diam., 4-lobed at margin. Berry subglobose, ca. 7 mm in diam., scabrous. Fl. Sep.