Pseudostems 70--80 cm. Ligule elliptic, ca. 1.5 cm, membranous, glabrous, apex truncate; petiole ca. 1.5 cm; leaf blade oblong or narrowly so, ca. 40 × 10 cm, base attenuate, apex acuminate. Spikes ca. 25 cm, densely flowered; bracts narrowly oblong, 1.5--1.7 cm, 1-flowered, margin convolute, apex rounded; bracteoles ovate, ca. 1 cm, apex rounded. Flowers yellow. Calyx ca. 2 cm, apex obscurely obtusely 3-toothed. Corolla tube slender, ca. 3.5 cm; lobes linear. Lateral staminodes linear, ca. 3.5 cm, apex mucronate. Labellum ca. 3.5 cm, apically 2-cleft for ca. 1/2 its length; lobes linear. Filament orange, ca. 4.5 cm; anther orange, ca. 8 mm. Ovary ca. 2 cm, glabrous. Stigma capitate. Stylodes filiform. Fl. Jul.
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