Rhizome subterete, 4--7 mm thick. Leaves solitary, spaced; petiole 9--11 cm; leaf blade spotted with yellowish white, oblong-lanceolate to narrowly oblong, ca. 25 × 4--5 cm. Scape 1--2.7 cm; bracts ca. 4. Flower solitary. Perianth campanulate, 8-lobed apically; tube purple adaxially, white abaxially, 9--10 mm × 1.2--1.4 cm; lobes recurved, purple, deltoid, ca. 5 × 5 mm, adaxially with 2 or 3 fleshy, papillose keels. Stamens 8, inserted proximally in perianth tube; filaments ca. 1.5 mm; anthers oblong, ca. 2.6 mm. Pistil ca. 4 mm; stigma large, ca. 7 mm in diam., with 3 or 4 fleshy, globose projections at center adaxially, 8-lobed at margin. Fl. Oct.