Pseudostems 50--100 cm, base subglobose. Ligule purple, 2--4 mm, glabrous, apex obtuse; petiole ca. 5 mm; leaf blade elliptic-lanceolate or narrowly lanceolate, 15--27 × 3--4 cm, glabrous on both surfaces, base cuneate or shortly so, apex acuminate. Spikes nodding, 4.6--5 cm, glabrous; bracts 7--10 mm, membranous, 1-flowered. Flowers yellow. Calyx ca. 1 cm. Corolla tube ca. 1.2 cm, throat villous; lobes linear, 8--10 × ca. 2 mm. Lateral staminodes petaloid, oblong-lanceolate, ca. 7 × 2 mm. Labellum oblong-ovate, ca. 7 × 2 mm, apically 2-cleft nearly to base. Filament ca. 1 cm × 2 mm; anther ca. 5 mm. Ovary globose, ca. 2 mm in diam., villous. Fl. Aug.
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