Pseudostems ca. 70 cm. Ligule 2-cleft, ca. 4 mm, membranous, glabrous; petiole 5--10 mm; leaf blade narrowly elliptic, 18--32 × 5.3--6.5 cm, glabrous, base cuneate, apex acuminate. Spikes 9--13 × 5--6 cm, laxly few flowered; bracts green, oblong, 2--2.3 cm × 5--6 mm, glabrous, 1-flowered, apex entire; bracteoles tubular, ca. 1 cm, split to middle on 1 side. Flowers white, glabrous. Calyx ca. 2.3 cm, membranous, apex truncate. Corolla tube ca. 4.8 cm; lobes linear, ca. 1.8 cm. Lateral staminodes narrowly lanceolate, ca. 1.1 cm × 2 mm. Labellum narrowly oblong, ca. 1.2 cm × 8 mm, apically 2-cleft to base; lobes narrowly oblong, ca. 3 mm wide. Filament ca. 1.5 cm; anther brownish red, ca. 5 mm. Ovary brownish pubescent. Style white, linear; stigma orange, ciliate. Fl. Jul.
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