Pseudostems ca. 85 cm. Leaves sessile; ligule 0.5--2.5 cm, glabrescent, apex rounded; leaf blade oblong-lanceolate, 4--33 × 1.5--6 cm, adaxially glabrous, abaxially sparsely villous, more densely so along both sides of midvein, base rounded to cuneate, apex acuminate. Spikes erect, ca. 15 × 4 cm; rachis ± villous; bracts oblong-obovate, 3.2--4.3 × ca. 2.2 cm, ± villous, ca. 5-flowered; bracteoles broadly ovate-deltoid, ca. 2 cm, ± villous. Flowers white, ca. 9 cm, slightly fragrant. Calyx hairy abaxially, split on 1 side. Corolla tube ca. 5 cm; lobes linear, ca. 2.6 cm. Lateral staminodes linear, falcate, ca. 2.7 cm × 2 mm. Labellum broadly ovate, ca. 2.5 × 2 cm, midvein yellow, apex 2-cleft. Filament yellowish red, ca. 2.4 cm; anther ca. 1.1 cm; connective extending ca. 1 mm beyond anther. Ovary ca. 5 mm, ± villous. Stigma shortly ciliate. Fl. Aug--Sep.
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