Pseudostems ca. 1 m. Ligule 5--6 mm, dry membranous, margin ciliate; petiole to 2.5 cm; leaf blade oblong or lanceolate, 20--50 × 5--12 cm, glabrous, base attenuate, apex acuminate. Panicles erect or pendent, 10--15 × 2--4 cm, glabrous; branches 0.8--1.3 cm, apically 3--5-flowered; bracteoles oblong, 7--10 mm, deciduous. Flowers white, glabrous. Calyx tubular, 3.5--4.5 mm, apex crenate. Corolla tube shorter than calyx; lobes narrow. Lateral staminodes horn-shaped. Labellum ovate, ca. 1.8 cm, base attenuate, apex acute, 2-cleft. Anther ovate, slightly hairy. Fl. Jun. 2 n = 48*.
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