Pseudostems to 1(--3.5) m. Ligule to 1 cm, abaxially villous, apex obtuse; petiole absent to 1 cm; leaf blade lanceolate or oblong-lanceolate, 50--70 × 8--12 cm, both ends acuminate. Panicles narrow, 15--20 cm; rachis glabrous or sparsely villous; branches 2-or 3-flowered; bracteoles elliptic, ca. 1.5 cm, apex mucronate. Pedicel ca. 3 mm. Calyx 1.3--1.7 cm, split on 1 side, apex 3-toothed, ciliate. Corolla tube ca. 1 cm, glabrous; lobes oblong, ca. 1.5 cm, apex ciliate. Lateral staminodes subulate, less than 2 mm. Labellum white tinged with yellow, marked with red stripes at center, broadly ovate, ca. 3 cm, apex shortly 2-cleft, crisped. Stamen ca. 2 cm, with a kneelike bend. Ovary subglobose, white sericeous. Capsule vermilion, ellipsoid, wrinkled. Fl. Jul--Aug.
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