Rhizomes pale yellow, fleshy, strongly aromatic. Pseudostems 0.7--2 m. Ligule 2-lobed, 4--7(--14) mm, glabrous or thinly pubescent; petiole absent to 6 mm, villous; leaf blade elliptic-lanceolate, rarely lanceolate, 35--50 × 8--14 cm, adaxially glabrous, abaxially pilose, glandular spotted on both surfaces, base rounded-cuneate to cuneate, apex acuminate. Inflorescences arising from rhizomes, ovoid to obovoid, 3--6 × 1.5--5 cm; peduncle 1--6 cm, slender, villous; bracts purple or white, cuneate-cochleate to oblong, 1.5--4 × 0.5--2 cm, abaxially pubescent, apex truncate or rounded; bracteoles 2.2--2.8 cm. Calyx yellowish, 1--1.3 cm. Corolla tube 3.5--4 cm; lobes yellowish white, lanceolate, 2.5--3.5 cm. Labellum yellowish white, ca. 2.5 cm; central lobe purple or red at apex, oblanceolate, ca. 2 cm × 8 mm, apex 3-toothed; lateral lobes suboblong, ca. 9 × 5 mm, throat shortly hairy. Anther ca. 1.2 cm; connective appendage purple or red, rarely yellow, ca. 1.2 cm. Ovary densely villous. Capsule red, ovoid-ellipsoid, ca. 4 × 2 cm, obtusely 3-angled, pilose. Seeds black; aril white. Fl. Aug--Oct, fr. Oct--Nov.
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